A/N: Hello everyone! Welcome to an IzuJirou oneshot of mine in celebration of Izuku's birthday. Enjoy the fic and Happy Birthday to Mirio, Izuku, and to a close friend of mine!

Disclaimer: I don't own MHA and the song. They are owned by their respective owners.

~ Thanks to You ~

He squinted his eyes at the light of the sun slipping between the curtains. He sat up and stretched his back. Taking a look at the clock beside him, he noted that he's awake 5 minutes earlier than his alarm. Deciding to start his day, he turned off his alarm and changed into his green tracksuit to go on a jog around the campus.

She groaned in her sleep. Shuffling on the bed, she tried to reduce the sun's glare on her face. Seeing no change, she decided to sit up and rub her eyes. Yawning, she took a look at the clock beside her. The clock read 6:30 AM and then she took a look at the calendar beside it. She yelped and immediately got off the bed to change. Once she changed, she ran out of the room, not before returning once again to get her things. Schoolbag strapped on her shoulder and acoustic guitar on her back, she then went to her table, picking up a few papers on it. She paused, looking at the papers and one thought ran into her mind before exiting the room.

'Today's the day.'

He jogged through the path, taking in the fresh air as he looked around. The morning was peaceful. A gentle breeze passing him by, slightly moving the branches and leaves fell to the path, giving him the perfect morning to jog. While jogging, he felt as if he forgot something. Shugging, he continued on his jog when he noticed a familiar figure along the path.

'Jirou-san?'

He was about to call out to her when he received a call. Taking out his phone, he looked at the receiver and realized it was Centipeder calling. He answered the call and held the phone to his ear, stopping while doing so.

"Morning, Centipeder. Is there something wrong?" he asked.

"Ah, good morning, Midoriya. No, there's nothing wrong here. Just wanted to check up on you and wish you a happy birthday."

Oh, so that's what he forgot. His eyes widened and looked at the date on his phone. It was July 15, his birthday!

"Midoriya? Is there something wrong?" Centipeder asked.

Right, the call. He pressed the phone on his ear and answered.

"Y-yeah, sorry Centipeder. I forgot that it's my birthday today," he chuckled nervously.

"Only you, Midoriya. Only you can forget your birthday," Centipeder sighed. "By the way, Bubble Girl wants to talk to you." There was a pause as the centipede man gave the phone to his sidekick.

"Hey, Deku. Happy Birthday! Who knew that you had the same birthday with Mirio of all people?"

"Thanks, Bubble Girl… Wait, what? I have the same birthday as Mirio?!" he was shocked, to say the least. He never expected that someone nearby had the same birthday as him.

"Yeah, didn't you know? Mirio didn't know either when I told him. He was excited when he heard about it. I'm guessing he'll be looking for you today."

"R-Really?! I guess I should find him later."

"Alright, happy birthday, Deku! Take care." And the call ended.

He looked back at the path and saw no sign of the resident punk rocker. Shrugging, he decided to walk for a bit before returning to the dorms. During the walk, he heard a guitar strum. Curious, he followed the music to see Jirou and Eri on a bench at the edge of a clearing. Jirou played the final strum and it was silent afterward.

"That was amazing, Mama!" Eri jumped out. Izuku choked on the air as he heard what the little girl said.

"Yeah, it was," Jirou said. "We're ready."

"Yay! I wanna surprise Papa later. This is gonna be the best birthday ever!" Eri pumped her fists in the air.

Meanwhile, Izuku's mind was on hyperdrive, thinking of the possible people she could refer to as 'Papa'.

'P-Papa? It couldn't be K-Kaminari, right? No, Eri said that it's for a birthday. Who else has a birthday today that she sees often?' he thought for a few more moments until he came to a conclusion. Unfortunately, he wasn't correct, not by a long shot.

'I-it couldn't be Mirio, right? It's possible, he's always watching over Eri and it's his birthday today.' Before he could continue, he saw Mirio nearing Jirou and Eri. Eri shouted before running toward Mirio to give him a hug. He returned the hug as he carried her on her arms. He smiled at Jirou and she looked away, blushing. Izuku's heart clenched, he put his hand over his heart as tears sprung in his eyes.

'W-What's this pain? Why does it hurt?' He looked back at them and couldn't take it anymore as he ran back to the dorms, tears flowing down his cheeks.

Mirio still had Eri in his arms as he addressed Jirou.

"Yo, Jirou!" he chirped.

She muttered something like "pervert" under her breath before greeting back to her upperclassman.

"Morning, sempai," she glared.

He flinched slightly at the glare and waved his free arm up in surrender.

"I'm sorry, okay? That's just how my quirk works."

"Still, you scarred me with your stupidity," she growled as she pointed her jacks near his face.

"Mama, don't hurt Lemon-nii," Eri whined.

She held her jacks a few seconds more before she sighed and retracted her jacks. Taking the chance, Mirio decided to change the subject.

"So… how's the song coming along?"

"It's great, Lemon-nii!" Mirio sweatdropped at this, "Mama said that we can finally sing it to Papa later." She raised her hands up and squealed. Raising an eyebrow, he faced Jirou as she sighed.

"Yeah, it's more or less finished. All we need to do now is to sing it in front of him." She twirled her jacks with her fingers, muttering the last part. Nevertheless, Mirio heard it and smirked.

"Yeah, all you need to do is sing it to your husba~" he sang when he was abruptly stabbed by an earphone jack. Thankfully, Eri already left his arms before he was brutally stabbed by her underclassman.

"Don't you dare!" she warned. Meanwhile, Eri was at another part of the clearing, looking at the flowers and butterflies.

Ugh- Fine," he wheezed. "Does he know that she calls you guys 'Papa' and 'Mama'?" he questioned.

Jirou blushed as she poked her jacks together.

"N-n-no, he doesn't. He hasn't had to visit her in the past few weeks because of stuff. Thankfully, she understood that he's busy and was waiting until the day he would visit," she mumbled.

"Oh? So when did she start calling him Papa?"

She thought about the day and blushed.

Last Week:

Jirou was called to his homeroom teacher's dorm. She was also ordered to bring her guitar. Confused by the instruction, she brought the guitar anyway, fearing the punishment if she didn't. She was surprised by bumping into Nejire on the way, saying that she was going to visit Eri. Not knowing who Eri is, she decided to just go with it. Together, they made their way and reached the hobo looking guy's door. Nejire knocked and the door opened up to see a tired Aizawa and a cup of coffee in his hand. He stared at them and took a sip of his lifeline. Nejire just stood still and Jirou was nervous by the stare her teacher was giving. Finally, he spoke.

"Alright, she's inside. I'll be sleeping in my office. Don't disturb me," he said sternly as he went to take his daily nap.

Nejire simply went inside as Jirou stumbled behind her. They saw Eri watching television and Nejire made a shush sign to Jirou. Confused, she just let the hyperactive girl be. Nejire slowly trudged on to the back of the sofa before she sprung. Jumping quickly and snatching the distracted girl, Eri squealed loudly and squirmed in her hands. Finally taking notice of Nejire, she let out a smile and hugged the older teen.

"Neji-nee!" she screamed.

"Hello, Eri-chan. Look, we have a guest today." Once they let go of the hug, the little girl finally noticed the extra guest. Her eyes brightened up once she saw who the person was. She got off Nejire and immediately went to hug Jirou.

"Mama, you came!"

She froze, trying to process the words the young one just said.

"Mama?"

She looked down and stared at her ruby eyes. Her inquisitive eyes staring straight into her soul. Not wanting to see the girl sad, she slowly put her hand on Eri's head and rubbed it. Eri relished at the touch as she leaned her head against the rocker's hand.

"E-Eri, was it?" the child nodded. "Who told you to call me M-Ma-Mama?"

"Neji-nee said to call you Mama, nee," the unicorn faced the floating girl.

"Nee," the older one replied back.

"E-Eri," she said as the younger one locked eyes with her. Whatever she was going to say was forgotten as she simply stared at her inquisitive eyes.

'I feel I'm going to regret this,' Jirou sighed internally.

"N-Nevermind, you can call me M-Mama," Jirou was unsure.

"Really? Yay!" she hugged her tighter as the dubbed "mother" of the girl awkwardly hugged her back.

"Is Papa here too?" she asked, looking around the room.

Once again, she froze. It took her a while to reboot so the hyperactive teen answered in her stead.

"Papa is not here, Eri-chan. He has many things to do so she can't see you. Don't worry, he'll make time to visit you," she cooed. Thankfully Eri understood and no longer asked about it.

Finally, Jirou rebooted and stared at her upperclasswoman. Nejire simply made herself look innocent by whistling. She had enough and pulled the older girl outside while informing Eri that they'll be having a talk outside.

Outside, Jirou stared at Nejire as she crossed her arms and tapped her foot impatiently.

"Well?" she asked. Nejire simply floated and answered in a chipper fashion.

"Well, she's been begging to see you and she wants you to sing for her again."

"Then why does she call me Mama?!" Jirou's patience is quickly diminishing.

"She called you that first though. You made her smile so it's no question that she sees you as her mother just like Midoriya as her father."

Jirou blushed and her jacks were going haywire.

"W-wh-what?!" she exclaimed.

"Don't ask me. It's really all her and I just encouraged it teehee~" Nejire giggled.

Jirou's eyebrow twitched as she put out an argument.

"Why Midoriya of all people? I don't even like him!" she stomped her foot. She would have continued when Nejire howled out like a hyena.

"Y-you think I - Hahaha- I don't see it? It's too obvious that - Hahaha - you like each other. The teachers even bet on when you two will confess. HAHAHAHA!" Nejire let out another howl of laughter as Jirou blushed fifty shades of red. Nejire continued laughing until she heard a small shy voice asking for confirmation.

"R-really?" Jirou mumbled, tapping her fingers and jacks together.

Nejire managed to reign in her laughter, the occasional giggle slipping in. She put her hand on the other's shoulder.

"Yep! I lost count of the many times you take glances at each other across the cafeteria. And don't think I don't know that you stare at him whenever he works out."

She blushed once again as Nejire laughed and went back inside the dorm. At the same time, Mirio arrived at Aizawa's door.

Present:

"So that's what happened. Then you came after, saying Midoriya's birthday is near and Eri wanted to sing for him," Jirou shrugged. "You never told me that it's your birthday too. Happy Birthday, sempai."

"Thanks, Jirou. I just wanted Eri to surprise Izuku, but I didn't expect you there, and being called 'Mama' no less."

"Ugh, is there anyone else who knows?" Jirou blushed.

"Nah, it's just us Big Three, then maybe the teachers, and surely Nezu."

Oh God, Jirou wanted to die from embarrassment. It was bad enough they knew about her crush on the cinnamon roll, worse when some of them knew Eri calls her Mama, and worst as the principal knew all this and accepted it. Her blush was so red that she almost combusted. Mirio simply laughed as he pats the young girl on the shoulder.

"Don't worry about that. Besides, it's almost time for class, you'll be late."

Jirou then took a look at her watch and paled as there were only five minutes left until the bell. Rushing to get her things, she gave a quick bye and hug to Eri and told Mirio to watch over the little girl before stabbing him once again with her jack and ran on his way to her class.

Wincing from the stab, he approached Eri and reached out her hand.

"Come on, Eri. It's time to go home."

"Aw, can we go see Mama and Papa?" she asked. Mirio shook his head.

"Sorry, Eri. You can visit them later. For now, we have to get you ready for the party later, okay?" she frowned but brightened up at the end.

"Okay!" Eri took hold of Mirio's hand as they walked back towards her home.

During the walk, Mirio could not help but let out one last thought to the young rocker.

'Good luck, Jirou.'

Izuku ran to his room, not even bothering to greet his classmates nor listen to Iida's shouting. He immediately went inside and locked the door. Leaning against the frame, he slid down and tried to get his breathing under control.

'W-why did I run away? What's wrong with me?'

Taking a few minutes to breathe normally, he thought of the events that happened prior.

'Are Mirio-sempai and Jirou-san dating? Did I see something that I shouldn't? Since when has Eri been calling Jirou-san, Mama? Does she really call Mirio-sempai, Papa?' Each thought brought more pain than the last.

'Why does it hurt? I don't like Jirou-san like that, do I?' He was about to delve deeper into his thoughts when someone knocked on the door. He yelped and tried to regain a face of normalcy before opening the door.

"Yes? Who is it?" He opened the door to see none other than… Aoyama?

"A-Aoyama-san? What brings you here?"

"The others were worried, Mon Amie! They're about to approach, but I told them to let me ask you, Monsieur Midoriya!" Aoyama posed as sparkles appeared around him.

"A-Ah, I see," Midoriya sweatdropped. "Nothing's wrong, I ran too much and I smell bad. Sorry about the trouble." He closed the door, but Aoyama's foot was in the way. He was about to ask but the sparkling boy beat him to the punch.

"Izuku-san, may we talk about this inside?" he asked in a serious tone.

Taken off guard by the carefree boy's serious tone, he opened the door to let the boy inside. Aoyama entered and locked the door behind him.

"Should we take a seat?" Aoyama gestured to the bed. It took a few moments for Midoriya to process as he unconsciously nodded and sat on the bed.

"Izuku-san, I will ask again. Is there something wrong?" Aoyama inquired.

"No, n-nothing's wrong, b-but," Aoyama leaned in, "I-I don't know?!" Izuku grasped his hair by the roots.

"I'm so confused," he shouted.

"Maybe you should start at the beginning, Mon Amie," Aoyama interjected.

And so he did. He explained everything from the jog to him running away, leaving out only the part where he discovered them singing. Aoyama had a suspicious gleam in his eyes when he heard of Mirio, Jirou, and Eri together and Eri seeing Jirou as her mother. He mulled over Izuku's suspicion of Eri seeing Mirio as the father and Mirio and Jirou being together. As he was thinking, he couldn't help but frown at the thought. Something was amiss and he could taste it at the tip of his tongue. Throughout the school year, the knight hero has been observant with his peers, seeing things others usually don't. Mulling over with the information in his head, his head shot up as a smirk appeared on his face, finally arriving at a conclusion. Izuku meanwhile, was looking at Aoyama's expressions and he was slightly afraid of the smirk on the usually smiling face. Aoyama stood in front of him as he pointed his finger at Midoriya.

"You are in love with Jirou-san, my friend!" Aoyama enthusiastically exclaimed.

.

.

.

"What?!" Midoriya screamed.

"Of course, Izuku-san. You are in love with Jirou-san. Your story and expressions tell me that you like her." Aoyama tutted, "Don't think I haven't noticed you staring at her these past few weeks."

Midoriya stammered, unable to make a comprehensible reply. But, the more he thought about it, it made sense. Recently, he found himself staring at the resident rocker. He couldn't look away from the luscious purple hair the girl has and how her quirk fits perfectly to her face.

Blushing, he tried to deny the other boy's claims, but he couldn't. He silently thought about it some more and sighed.

"Y-you're right, Aoyama-san. I-I-I think I really d-do l-l-like her," Izuku stuttered.

"At last the loverboy confirms," Aoyama explained.

"A-A-Aoyama-san!"

"No worry, Mon Amie. I won't tell anyone. I'll tell the others you fell into the pond and ran to change clothes."

'T-Thank you."

"You have to get ready though. There are only ten minutes left for class, Izuku-san. I'll be leaving now, happy birthday!" And with that, he left.

Silence encompassed the room as Izuku accepted his new-realized crush on the purple-haired girl. But then, his words rang into his head. Looking at the clock, he yelped that he has only nine minutes left before classes. He quickly took a shower and changed into his uniform. Looking at the mirror once more, he nodded then looked at his watch to see how many minutes he has left before classes. He yelped once more as he only had five minutes left. He immediately went downstairs and once outside, he used Full Cowl to run to his class.

Jirou was running to school. Looking at her watch, she only had three minutes left before the bell and she knew she won't be able to make it. While running, a blur shot past her, putting her in the dust, literally. She stopped and coughed out the dust that got in her throat and it was then the runner noticed her and stopped.

"H-hey, you alright, J-Jirou-san?!"

The voice was familiar to her. Looking up, she locked eyes with the greenette, his eyes full of concern.

"M-Mido *cough* Midoriya?"

"J-Jirou-san?! What are you still doing here." Izuku was shocked to see the petite girl.

"I-I'm trying to get to class. What are you doing here?!"

"M-Me too. I lost track of training," Izuku lied.

"Well, at least we'll both be late at this rate. Wanna walk together?" Jirou blushed.

"W-Well, sure but — Wait, I got it!" Izuku got an idea as he immediately adjusted his backpack to his front as he crouched down in front of the girl.

"Mi-Midoriya, what are you doing?" she was surprised by her classmate's actions.

"Hop on, I'll take us there," he said without facing her.

"N-No! I can't let you do that."

"Come on, come on or we'll be late" he prodded.

She contemplated her choices. One, they could walk together, resulting in them being late and in detention, or two, climb on his back and pray they'll reach in time. She was about to choose to walk when the angel and devil versions of her appeared on each shoulder.

"Kyouka, you should climb on him, we can't be late," Angel Kyouka said.

"Yes, Kyouka. Ride him! Feel his muscles," Devil Kyouka smirked as she made a grabbing motion with both hands.

"D-Devil! Kyouka, don't listen to her. But you still need to get to class on time," the angel pleaded.

"I agree with Angel and this is the best way to know how he feels for you," the devil tutted her finger. "Think about it, you have an ear quirk," she shrugged.

"Honestly, I don't approve of her actions, but she has a point," Angel shrugged.

"Now go!" they shouted and Jirou came back to reality.

"J-Jirou-san? I-Is there something wrong?" Izuku stuttered.

"A-Ah, nothing! Let's just go," she blushed as she climbed on his back. Meanwhile, Izuku was red from feeling two soft lumps on his back. He took a deep breath as he activated Full Cowl.

"Hold on tight, Jirou-san." She didn't reply but he felt her arms tighten around her neck and her head behind his, breathing on his neck. He blushed a deeper red as he held her legs under her and she wrapped them around his waist. Taking one last deep breath, they sped off to class.

They managed to reach the classroom with less than a minute to spare. Once they stopped by the door, Izuku crouched again, a sign for Jirou to climb off his back. She quickly got off his back and onyx met green in an interlocked gaze. They stared for a few moments before remembering where they were. They looked away, blushing. Jirou fought with her thoughts and finally made a bold decision. She looked at the boy she liked and walked towards him.

"Ji-Jirou-san?" he was confused and slightly scared of her approach. She gave no reply as she continued until there was only an inch of space left between them. Jirou tipped her toes until her mouth was on his ear. He could feel her breath tickling him. He opened his mouth until —

"Thank you, Izuku." And with that, Izuku felt something soft and wet pressed on her cheek. She pulled away immediately after and ran into the classroom.

Izuku stood motionless. Slowly, he raised his hand and touched the cheek where she kissed him. He gazed at the door until a cough sounded behind him. He immediately returned to normal and turned around. He paled once he saw his homeroom teacher, Aizawa Shota, behind him with a smirk so big that it was getting creepy.

"A-Aizawa-sensei," the student fumbled, trying to come up with an excuse.

"I won't give you detention, just this once." Izuku sighed in relief. "But," he stiffened once again.

"Just get inside and happy birthday," smirk never leaving his face.

Izuku bowed in thanks for both avoiding detention and his greeting. Once Aizawa was alone, he was finally able to let loose. He laughed... and laughed… and laughed. He laughed so maniacally that it could be easily compared to a villain's. Through his 'moment', one thought resided in the teacher's head.

'Oh, I'm so winning that bet. Get ready, Mic, I'll be taking my money tonight.'

In the faculty, Mic was grading papers when he felt a chill down his spine. He looked around and saw nothing out of the ordinary. He mused that the air conditioner must not be working again.

Inside the classrooms, the students panicked when they heard the laugh, screaming something like a villain had let loose within the academy. Vlad, who was in 1-B calmed his students down, saying that it's just Eraserhead letting loose while his thoughts were racing inside his head.

'He's laughing again. Either he must've discovered something obvious or he won a bet. Since today's Midoriya's birthday, I'm guessing it's both. But what could it be?' Horror struck the blood hero's face.

'Oh no, he must've won the bet. Damn, I should've bet it to be today. I was going to use that prize money for a new blender,' he hung his head in sorrow, making his students question his well-being.

Aizawa entered the room, terrifying the students with the unnerving smirk he had on his face.

"Nice to see you all quiet for once," that nerve-wracking smirk sending chills to the students' spines, especially Midoriya's.

"Since I'm in a good mood today," some of the students visibly relaxed,

"I'll give you all…" everybody leaned forward to hear the man's next words,

"a pop quiz!" everyone's faces crashed on their tables and groans of pain and suffering were heard.

"Ectoplasm told me you weren't able to take the quiz yesterday because of the time. No matter, we'll finish it now." Never had the students been more afraid of their teacher after this.

Aside from the pop quiz the ecstatic (*cough* sadistic *cough*) teacher gave, the day went by normally. Although Mic did get a chilling foreboding when he passed by Aizawa for English class. Lunch was, suffice to say, an interesting event for the cinnamon roll and punk rocker. Across the cafeteria, they couldn't stop glancing at each other and whenever their eyes meet, they would immediately blush and look away. Mina, seeing the resident rocker's face, teased her about it.

"Oh ho? What are you blushing for, Kyouka-chan?"

"N-Nothing!" She looked down and played with her food.

'W-Why did I kiss him?'

'Why did she kiss me?'

"Deku-kun? What's wrong? You're staring at your food again," Ochaco said, releasing the successor of his thoughts.

"A-Ah! I-Its nothing, Uraraka-san," he said.

"Midoriya-san, it is imperative to eat your meals at the proper time. You can think about your problems later," Iida said with his robotic arm movements.

"Y-yes, Iida-san." Izuku ate his meal in silence as lunch passed by.

During Heroics, All Might pulled Izuku aside for a moment to wish him a happy birthday. The mentor also told him to join him on a walk after classes. Curious, Izuku accepted the offer as they started the class.

The class consisted of another rescue operation in one of the training ground Gamma. The exercise was to be grouped by pairs and fortunately or unfortunately, Izuku and Jirou ended up together. Making eye contact, they remembered the event before classes and they blushed. Jirou, being tired by their silence, decided to break the ice.

"M-M-Midoriya?" she coughed.

"Y-Y-yes, Ji-Jirou-san?" Izuku being nervous was an understatement. He was at the point of stiffness where he could copy Kirishima's Unbreakable.

"W-We should treat each other as professional heroes in this exercise. We can talk about our feelings later," she sighed.

"U-u-uh, yes! J-Jirou-san," Izuku visibly calmed down, but that doesn't mean his mind is calm.

'Feelings? What did she mean by that?'

Thankfully, the pair managed to save their robot victim without any problems and Heroics drew to a close.

After classes, the class bar Izuku rushed out of their classrooms. Izuku was confused, even the ever strict Iida was rushing back to the dorms.

'What's going on?' he thought as he went to Toshinori's office.

"Ah, Young Midoriya! Are you ready to go?" Toshinori was already outside his office waiting for his successor.

"Yes, All Might, but where are we going?" Izuku asked as they exited the building.

"Just a simple stroll, my boy. Say, how are you in controlling One For All and Blackwhip?"

"O-Oh, it's going great! I can finally tap up to 30% of One for All without hurting myself and Blackwhip training has been doing good, Sir."

"That's good. It won't be long until you gain full control of the power as well as the other quirks," his laughter boomed across the path. Silence came after and it was then Izuku noticed that they were going to the entrance of the campus.

"All Might, Sir? Are we going outside?"

"No, Young Midoriya. We're just going to pick someone up by the entrance," he said cryptically.

Taking it as a sign that his mentor won't specify who they'll pick up, he sighed as they continued their walk in silence. They neared the entrance when a familiar voice rang into his ears.

"IZUKU!" Inko shouted as she wrapped her son in a hug.

"M-Mom?! What are you doing here?" he asked, hugging her back.

"I came here for your birthday party of course!" she chirped.

"Birthday party? But Mom, I don't have any parties planned." Izuku was baffled.

"O-oh…" Toshinori facepalmed. "I-I still came to visit you, of course! You're my son and it's your birthday. Happy Birthday, sweetie!" she immediately changed the subject as she enveloped her son in another hug and Izuku reciprocating it.

"Thanks, Mom." Tears sprang out of the mother and son duo. Toshinori was about to call their attention but refrained.

'Besides, they'll have more time to prepare,' Toshinori thought.

"Where are the banners?!"

"I don't know?! I thought Sero had it."

"What? No, I gave it to Uraraka!"

"Is the cake ready?"

"No, I still need ten more minutes."

"What about the food?"

"Five minutes, Ponytail!"

"Where the hell is Kyouka?! She should've been helping us!"

The preparations could be described in one word: disastrous. They were unprepared and some forgot about the surprise party, which resulted in a lack of materials. The eighteen students were all around the common area, trying to get the party ready in time. What they didn't know was that the other missing student was on her way to the teacher's dorms to pick up Eri.

"Are you ready, Eri?" Jirou asked.

"Yes, Mama! Let's go. I wanna sing for Papa." Eri jumped up and down as she ran to the path while pulling Jirou.

"Whoa, calm down, li'l bean. Papa may not be there yet and we'll sing to him, but later," the punk rocker chided her 'daughter'. She still blushed from thinking about Midoriya as he is the 'father' of their little family. Fortunately, the child understood and stopped running.

"Sorry, Mama." Eri had her head down.

"It's okay, Eri. Let's just walk, okay? If you run, you might not be able to sing later." Jirou knelt on the pavement and pat the girl on the head. Eri looked up at Jirou with fear in her eyes.

"No, Mama. Anything but that!" The purplette simply giggled and kissed her on the head.

"It's going to be alright. He'll love your song."

"No, Mama. He'll love our song. You will sing... right?" Eri had her puppy dog eyes activated.

"Of course, I'll sing. Okay, he'll love our song. That okay?" Jirou sighed and blushed at the thought of singing for Izuku.

"Yay! Come on, Mama. Let's go now."

"Yeah, we should." Jirou stood up and held Eri's hand as they walked to the dorms.

'How long are they going to keep this up?' Toshinori asked in his thoughts.

The two have been hugging for the last ten minutes, tears softly streaming down their cheeks. He finally had enough and let out a deliberate cough to let them know of his presence. As expected, the duo immediately let go of each other with blushes on their faces. They faced him together as they bowed in apology.

"We're sorry!"

"I-It's alright," Toshinori sweatdropped. "But we must get going. Midoriya-san is actually here to take a look at your dormitory, Young Midoriya," he lied through his teeth. Inko was confused until the retired pro looked at her in the eyes as if to say, 'Just get along with it.'

"O-Oh! Oh, yes Izuku. I'm actually here to see your dorms. We scheduled it today because this is the only time I'm available," she reasoned before Izuku could ask.

"I see," he mused. "Alright! Let's go, I can't wait for you to meet everyone," he smiled.

Inko smiled at her son's excitement as they walked to the dorms.

"Whew, we managed to finish it just in time," Yaoyorozu sighed, wiping the sweat on her forehead.

"O-Oh, next time, set up birthday reminders," Kirishima wheezed out.

"Agreed," the others drawled.

"Hey, guys. What's up?" Jirou took this time to enter the dorms with Eri beside her. Everyone glared at her and she rose an eyebrow in response while Eri hid behind her.

"What's that for?" Jirou asked.

"What's that for? What's that for?!" Mina screeched out. "Where have you been?! We've been preparing and you're nowhere to be seen! What are you doing that's more important than this? Huh?!" Throughout her screech rant, Eri held on Jirou's waist closer as she rubbed her face on the small of her back. Jirou glared at the pink alien as she placed a comforting hand on the child's head.

"Apparently picking up an important guest, that's what." Her glare was as fierce as a wolf protecting its pack as Mina and the others who saw the glare, flinched. It was only then the prim and proper girl of 1-A noticed the extra person hiding behind the rocker.

"Why hello there, who are you?" Momo carefully approached the girl as Eri held her 'mother' closer. It was only then the other occupants noticed the little girl in the room.

"Eri, it's okay. You can trust them," Jirou said and the girl slightly relaxed. Eri peeked behind Jirou and introduced herself.

"H-Hello, my name is Eri." The others were about to introduce themselves when the teachers arrived.

"HEEEYYYY LISTENERS!" Mic shouted.

"Mic, shut it. There's a kid here," Aizawa scolded the English teacher, allowing Eri to peek behind Jirou once more because Present Mic's shouting made her hide again.

"Ow, sensei, I'm right over here," Jirou deadpanned.

"Sorry, listener," Mic apologized.

"Alright, that's good and all, but Midoriya is already near," Midnight reminded everyone.

"Everybody, hide!" Kaminari screamed and the lights went out. Everyone panicked to find a hiding spot and there were shouting and pushing among the students and teachers.

"Hm? What's that?" Izuku asked, cupping his head behind the ear to listen.

"Huh? I didn't hear anything. You must've been imagining it, Young Midoriya."

"I didn't hear anything either," Inko tossed her two cents.

They were already at the entrance and the adults persuaded Izuku to go in first. Shrugging, he simply opened the door and immediately noticed the darkness inside.

'Strange,' he thought as he warily went inside. He was about to go further when someone suddenly wrapped their arms around his body, scaring him.

"AAAAHHHHH!" Izuku screamed as instincts suddenly crept in. He used Full Cowling as he elbowed his assailant at the stomach and judo flipped him onto the ground.

"SURPRISE!" The lights immediately turned on and everybody came out of their hiding spots.

"W-Wha? Everyone, what's all this?" Izuku asked. Bakugou decided to speak.

"It's your birthday party dum—," Jirou glared at him, "Uh, I mean Deku!" sweat was going down Bakugo's face.

"O-Oh…" He looked around and saw everyone there, including the teachers. Stiffening, he looked at his downed assailant as Kaminari groaned below him.

"groan. New reminder: Never surprise Midoriya again," the lightening boy said before passing out. His predicament prompted a few laughs and snickers from the others, especially Jirou's. It was then Izuku realized how angelic the sound of her laugh. He never noticed a small ball of white tackling his waist as he instinctively caught the girl in his chest.

"Fine, hug her while you slam me," Kaminari groaned.

"Papa!" Eri screamed. Izuku tensed, his classmates were shocked, Aizawa smirked, Mic paled, Midnight cooed, Toshinori smiled, but the most intense reaction came from the mama bear, Inko herself.

"Izuku, why didn't you tell me I'm a grandma now?" Inko already had tears in her eyes. Izuku became alarmed as he immediately pulled her mother outside with one hand while holding Eri in the other. Eri, meanwhile, enjoyed the ride her 'father' was giving him as the others were surprised by his sudden action. Aizawa looked at Toshinori curiously as the man sheepishly rubbed his neck and counted down with his other hand from three, two, one…

"WAAAHHHHHH!"

Everyone immediately jumped at the noise as they looked outside the windows. Suffice to say, everyone was floored except Toshinori, who sweatdropped, at the flash flood that happened outside the dorms.

"What happened?! I thought the forecast today's sunny!" Mic yelled.

"Uh…" Toshinori started. Everyone looked at him as he answered their question. "Midoriya-san has really powerful tear ducts and apparently it's not a quirk."

Everyone just stared at him.

"How the hell does she have the body to expel that much tears?!" Kirishima gestured to the flood frantically. Bakugou simply sighed and clapped his friend on the shoulder sympathetically. Kirishima looked at him funny and he explained.

"Don't ask, Shitty Hair. We just don't know either. Deku can also cry as much as Auntie Inko. At least they helped us during the drought few years ago." Bakugou sighed.

"Uh… What?" Ojiro asked.

"Drought? You mean that one time it was so hot and a flash flood suddenly came and help us survive that drought? That was them?!" It was Sero who pointed out. Bakugou nodded.

For the next few minutes, they were quiet as the flood suddenly dissipated over time until the Inko, Izuku, and Eri returned inside the dorms.

"Sorry about that, Mom can really cry a lot," Izuku chuckled. Everyone just blankly stared at him in reply.

"A-Anyway, sh-should we just get is started?" And that they did.

Everyone was enjoying the party. Food and drinks were passed around, people dancing to the music, and just basically partying to their heart's content, as content as they can when there are teachers, adults, and a child present of course. Soon after, it was time for the cake.

Sato brought out a large cake from the kitchen as everybody gathered around the birthday boy. He placed the cake in front of Izuku and greeted him. Izuku thanked him as the lights shut down and only the candles illuminated the room. To his right, Eri stood on the chair, looking at the cake in wonder and beside her was Jirou, who was making sure Eri won't fall off the chair. A calm silence passed and as one, they began to sing.

Happy Birthday to you

Happy Birthday to you

Happy Birthday, Happy Birthday

Happy Birthday to you

"Make a wish, Papa. Make a wish!" Eri jumped in excitement at Jirou tried to calm her down before she fell.

Izuku smiled and looked at everyone and saw the smiles and smirks directed at him. The ones that affected him the most were his mother's teary smile, his mentor's proud look, Eri's excitement, and Jirou's eyes full of admiration and something else he didn't catch. He looked at everyone once again and closed his eyes. As he already had a wish in mind, he opened his eyes and blew the candles. Everyone clapped as the lights were turned back on.

"Papa, Papa!" Eri jumped as she raised her arms up. Izuku chuckled and carried the girl in his arms.

"What is it, Eri-chan?"

"What did you wish for, Papa?" Eyes full of wonder, she wanted to know his father's wish.

"Honey, if I tell you then it won't come true."

"Aw," she looked down in disappointment.

"Don't worry." He kissed Eri's forehead, "I have a feeling my wish has already been granted.

She smiled back at him.

"Papa, come with us!" Eri pulled Izuku to the common area with Kyouka on their trail. She immediately sat down and took out her guitar, prompting a few confused glances from the others.

"Ok, ok, Eri. What's this all about?" Izuku was pushed down on another end of the sofa.

"Me and Mama are going to sing!" the girl pumped her fists in the air.

.

.

.

"EEEEEEEEHHHH?!"

Izuku simply sat there, eyes wide until he remembered this morning's events. How she called Jirou 'Mama' and the song they have in mind. Slowly but surely, a grin began to worm to his face, turning into a full-blown smile.

"I can't wait, Eri," he simply said. Everyone was still trying to process the events as they were looking at Izuku, then Jirou, then Eri. Jirou tried not to let the stares get to her as she only focused on tuning her strings. After tuning, she looked at Eri, who was getting ready, and Izuku, who had a full smile on his face and eyes full of joy and… relief? She was confused by the last one and decided to ask him later.

"Ready, Eri?" Jirou asked the girl.

"Ready, Mama!"

'Mama?!' a certain rosy-faced girl and electric boy thought.

The mother and daughter duo took deep breaths and Jirou finally strummed her guitar.

(Eri)

Thank you for teaching me how to love

Showing me what the world means

What I've been dreamin' of

And now I know, there is nothing that I could not do

Thanks to You

Everyone was surprised to hear Eri sing. It just showed how much this song meant to her. Izuku couldn't help but gasp as tears welled up in his eyes. To others, what they hear is a heartwarming song, but to him, it was that and more.

For teaching me how to feel

Showing me my emotions

Letting me know what's real

From what is not

What I've got is more that I'd ever hoped for

And a lot of what I hope for is

Thanks to you

(Jirou)

No mountain, no valley

No time, no space

No heartache, no heartbreak

No fall from grace

Can't stop me from believing

That my love will pull me through

Thanks to You

Only the adults and Izuku managed to understand the depth of Jirou's singing. They realized she didn't sing her part out of necessity, but rather by choice, for her to speak her feelings through the lyrics. Inko smiled and Toshinori wrapped his arm around her, swaying to the song. The teachers simply smiled at how much effort the two did just to sing this song.

There's no mountain, no valley

No time, no space

No heartache, no heartbreak

No fall from grace

Can't stop me from believing

That my love will see me through

Thanks to You

Thanks to You

(Jirou and Eri)

For teaching me how to live

Putting things in perspective

Showing me how to give

And how to take

No mistake

We were put here together

And if I breakdown

Forgive me but it's true

That I'm aching with the love I feel inside

Thanks to You

Thanks to You

Everyone clapped at the performance while Eri ran in front of Izuku, her hands on his knees.

"Did you like it, Papa?" she looked up to see tears in her 'father's' eyes. He immediately scooped her up as they spun around. Izuku gave a large grin as Eri giggled around. He put her down after as he approached Jirou.

"So, did you like it, Izuku?" she quietly asked, but Izuku heard it anyway.

"I don't like it," she looked down in shame. He held her face in his hands, forcing her to look at his eyes. Green met onyx once more before he did something that surprised them all.

"I love it," and he kissed her. Everyone's jaw dropped as Aizawa looked at Mic smugly, his hand making a 'give me' motion. Mic sighed as he gave his partner his winning share of the bet.

"And I love you," Izuku said as they parted lips.

"I-I love you too, Izuku," and with that, they kissed once more and everyone gave another applause to the newly-formed couple.

The party finished up as is was getting late. The teachers bid them goodbye and greeted Izuku for the last time. Inko was tired and Toshinori decided to take her home. She hugged him one last time as his mentor gently ruffled his hair. Everyone bid each other goodnight as they scurried off to their own rooms with Eri going along with Jirou.

"Time for bed, Eri," Jirou called out.

"Okay," she chirped as she climbed on the bed. As Jirou was tucking the girl in, she asked.

"Mama, will Papa sleep with us tonight?" Jirou was about to reply when someone knocked on her door. Questioning who would still be out this late, she opened the door to find Izuku in a black shirt and shorts. He was blushing and kept looking everywhere except at her.

"Izuku, what are you doing here?"

"A-Ah, Ji-Jirou-san! Uh… I-I want to a-ask i-if I c-can se-sleep h-here for the ni-night?" He brought up his hands to show her he brought his pillow and blanket.

"W-Why?" she quietly asked, looking down.

"W-Well, Mineta is being too troubling today and I had the feeling Eri wanted to sleep with u-us?" he shrugged.

"Fine, get in," she went inside, not looking at his eyes. He paused for a moment before he stiffly went inside.

"Papa!" Eri shouted. "Are you going to sleep with us?"

"Ye-Yes, Eri. L-let's get ready to sleep, ok?" Izuku answered.

It took a few minutes to reorganize themselves and the couple found themselves facing each other and Eri already asleep in the middle, snuggling onto Izuku's chest.

"What a night, huh? Jirou awkwardly said.

"Y-yes it is, Jirou-san."

"You can call me Kyouka, you know?"

"A-are you sure, K-Kyouka?"

"I-I'm sure."

"Thank you," Izuku suddenly said.

"Huh, for what?"

"For the song…"

"O-Oh, you're welcome." She avoided his gaze.

"I love you, Kyouka," he kissed her forehead. She blushed on contact and snuggled herself deeper to his arm.

"I-I love you too, Izuku," she said so slowly, eyes drooping.

"Good night, Kyouka," Izuku held her closer.

"Good night, Izuku," she closed her eyes as her breathing evened out, signifying she was already asleep.

Izuku looked at the two girls once more with love in his eyes before he closed his eyes and slept.

'Best birthday ever,' was his last thought as they slept soundly throughout the night.

~ Thanks to You ~

A/N: I'm finally finished with the oneshot. Woohoo! I never expected this to reach 24 pages. Honestly, this is out of my comfort zone. Thank you all for the support and for those who are wondering about my other fics, Love Songs is not abandoned. I just had some writer's block on the story. I should be able to upload the fic next week so stay tuned.

Once again, Happy Birthday to Mirio and Izuku!

This is Zephyr blazing out! Peace!