Author's note: It's finally back. I'm very sorry for the huge gap in between chapters. I got a new job recently and that's taking up majority of my time while the remainder was occupied by playing Dragon Quest XI. Hopefully the next chapter will come out faster than this one.

One For All

Seven months have passed since the sludge villain incident, and Izuku has been in the spotlight ever since. The constant praise he got was pretty off putting to him. People that either ignored or picked on him before, were suddenly wanting to be his best friend. There were even a few girls who confessed to him. One did so while Ochaco was right next to him. Izuku blushed at the memory because Ochaco put an end to her confession by kissing him right in front of the other girl.

Izuku stood at the now spotless Dagobah Municipal Beach proud of the task he and his girlfriends had accomplished. Although the clean-up had finished three days ago, people still didn't come to the beach regularly and was currently vacant. Which might have been because it was mid way through November. While Izuku was admiring the beautiful sunrise over the coastline, Yagi arrived.

"Admiring your handiwork, young Midoriya?" Yagi said as he arrived at the beach and greeted the young man in his true form. Izuku turned around and shook the older man's hand. "You did something to be proud of young man."

"It still feels like I cheated my way here though. There's no way I could've done this by myself. I owe so much to you, All Might." Izuku responded readying himself for what was to come.

"Nonsense. This was your hard work that did this not mine. You and your friends were the ones that cleaned the beach. All I did was create a workout plan. Besides you had already decided to clean this place as training anyway." Yagi said before noticing something was missing, or rather someone. Two someones in fact. "Where are young Uraraka and young Hatsume? I thought they'd be here right now."

"Since we finished the cleanup on Wednesday, we didn't get the chance to celebrate until last night. We stayed up pretty late last night, and I didn't want to wake them up this early in the morning. Especially since it's Saturday." Izuku answered while sheepishly rubbing the back of his head and blushing. Yagi noticed this but decided to look the other way for now.

"They deserve a little rest anyway. Are you planning on telling them about One for All?" Yagi questioned with a serious expression.

"Eventually but not right away. I don't want to keep secrets from them, but I'm not certain how many people I'm going to want to tell once we get into U.A." Izuku answered once he remembered that the girls were open to others joining his, for lack of a better term, harem. Unfortunately, Izuku learned the girls get final decision on who joins.

"Who you tell and how many is up to you, young Midoriya. It's your secret to tell now. Just remember that if word of One for All ever gets out, you and anybody you tell may be put in danger. I trust you know this already." Yagi said while giving Izuku a stern look.

"Don't worry All Might. I know all that. Before we do the transfer, I have a few questions." Izuku said addressing Yagi's concerns. He nodded urging the young man to continue.

"Why were you at the beach day we began our training? It seems like too much of a coincidence for you to be there that day." Izuku asked. The look on his face told Yagi that this particular question had been in the back of his mind for awhile.

"Truth be told I was looking for you. Like I said I always kept you in mind when I thought about who my successor should be. I ran into your sister on my way back from something important, and I asked if she knew where you were."

"Yeah I figured as much. Thanks for confirming my suspicions." Izuku nodded in understanding before realizing something off about his story. "Wait a minute! My sister was at the dorms that day. What were you doing at U.A. All Might?"

"I'm afraid that is a question I can't answer young Midoriya. Sorry."

"Oh well I guess I'll learn some other time. Now onto my next question. Do you know how One for All will affect me?" Izuku asked.

"I do not. My predecessor told me that One for All takes a different form for each user. I have no idea if it will give you two separate quirks, enhance the one you already have, a combination of the two, or something else entirely." Yagi said with a shrug.

"So we're going in blind. Well that's a bit of a let down. I think I've asked everything I wanted to for now, but I'll probably have more questions later." Izuku said with a firm nod while Yagi went into his hero form and pulled a hair out of his head.

"Now, young Midoriya, let's begin. I was told that there's a difference between being lucky and deserving. One is an accident. The other is a reward. Never get the two confused. Take those words to heart young man." Izuku nodded at Yagi's words and reached his hand out. "Eat this."

"Wait, What?" Izuku's eyes were on the verge of popping out of his head when he heard what his idol just said. He was hoping he heard wrong.

"In order to receive my quirk, you have to swallow some of my DNA that's how it works." Yagi said while shoving the hair in his face.

"This isn't exactly how I pictured it happening." Izuku said in a panic.

"Really? With how your quirk works I thought you would know that already." Yagi said while scratching his head.

"Every time I try to use my quirk to learn more about One for All, I start to get a headache, and my vision starts to blur. The only other time that happens is when I try to use my quirk on multiple people."

"Well given how I am the eighth person to hold this quirk that's not too surprising. What is probably happening is your quirk is seeing the quirks of the previous users as well. Before we get too distracted, we need to commence with the transfer." Yagi said while still holding the hair.

Izuku sighed and braced himself for what was to come. Okay it's only one piece of hair. That's not a big deal. I have swallowed hair before, but this is my first time doing so on purpose. Now that I think about it, I should probably talk to Mei about trimming down there. Izuku thought trying to psyche himself up.

Izuku took the hair from Yagi and put it in his mouth. He gagged a bit from the taste and started to swallow it, but no matter how hard he tried the hair just would not move down his throat. Yagi noticed this and gave him a bottle of water to help push it down.

"Good you swallowed it. Correct?" Yagi asked a bit embarrassed for the boy.

"Yeah it went down, but I don't feel any different." Izuku said with his face still green.

"Of course not. Your body still has to process the hair first. It should kick in about two hours from now."

"I guess that makes sense. How will I know when it kicks in?"

"You'll suddenly feel a rush of pure power coursing through your body. Have you thought of any more questions, young Midoriya?"

"Actually, I have. You said that transferring requires somebody to take in my DNA. Does that mean someone can rip out a piece of my hair and swallow it to take One for All from me?"

"Not at all. One for All can only be given to another person if the current bearer chooses to pass it on. It cannot be stolen, but it can be forcefully given to someone else. The successor does not have to accept it." Yagi then compared that aspect of One for All to someone giving a gift the other person doesn't want.

"What kind of example is that?" Izuku asked confused by his mentor's phrasing. After Yagi's only response was a shrug, Izuku decided to move on. "Actually now that I think about it, can I give One for All back to you?"

"I do not know. Nobody has ever tried to give One for All back to a previous bearer."

"Well that will probably remain a mystery forever then. Okay let's move on to my next question. Is it only if my DNA is consumed, or are there other methods of passing on One for All?" Izuku asked with slight blush that was not unnoticed by Yagi.

"I'm not sure I understand. Could you give an example of what you mean?" Yagi said trying to understand what he meant.

"What if I was to donate blood? Could One for All be passed on through the transfusion?" Izuku asked trying to avoid saying what was really on his mind.

"Yes One for All can be transferred via blood transfusion, but again only if you let it."

"What if the exchange of DNA itself is intentional?" Izuku said as his face turned completely red.

"Young Midoriya I respect that you want to keep some of your life private, but you being ambiguous with every single question is just wasting time." Yagi said losing his patience.

"Well I'm sure you noticed that Ochaco and I started dating over half a year ago. Would she receive One for All if we were to kiss and she swallows my saliva?"

"No she would not. All that matters is whether you intend to pass on One for All. Also, I know you're in a relationship with young Hatsume as well. You don't need to hide that from me, but please keep the intimate parts of your relationship to yourself." Yagi answered knowing what Izuku was really asking.

"How did you know? Also I'd like to point out was their idea for a polygamy relationship not mine." Izuku said trying to defend himself.

"All three of you got a lot closer after the sludge villain incident, and I guessed what happened. I won't think any less of you if that's what truly makes you three happy. Just stay safe. Before you ask, any children you have won't receive One for All either." Yagi said guessing what his next question would be.

Izuku nodded in understanding before speaking. "I'm still concerned about how One for All will affect me."

"Maybe we could figure it out. Tell me how your quirk works, and that might give us a clue."

"As I told you before my quirk lets me learn the quirks of other people as long as I have line of site with them. It also tells me any weaknesses of their quirks and the fundamentals of how they work. Basically when I use my quirk on someone, something similar to a status screen from an RPG flashes into my mind. My quirk also causes my mind to process information much faster than average, but that seems to be more of a side effect. Another thing if I use it on multiple people, I get a headache and my vision blurs."

"With the way you described your quirk it reminds me of Ragdoll from the Wild Wild Pussycats. Your sister and father's quirks are pretty similar to her quirk as well."

"Aunt Tomoko? Yeah I suppose they are pretty similar."

Yagi's eyes widened at this reveal. "Wait a minute. How come neither you nor your father ever mentioned that you were related to her?"

"You never asked. She also doesn't like people knowing she's part of our family. She always felt like she was in my dad's shadow when it was brought up." Yagi immediately understood his reasoning. Izuku grew tired of the distractions and returned to the prior conversation. "Even describing it like that I still have no idea how it will affect me."

"Perhaps your quirk will alter to something similar to your sister or aunt. There's also the chance it could just grant you super strength without affecting your existing quirk."

As the two were talking, a car pulled up to the beach. Both stopped talking and saw a short elderly woman with her hair in a bun get out of the car. Yagi reverted to his true form upon seeing who had arrived.

"Why did you return to your true form, and who is that?" Izuku asked not recognizing the elderly woman, but felt like he should know her.

"Right introductions. Young Midoriya, this is Chiyo Shuzenji also known as the Youthful Heroine Recovery Girl. She's the head nurse at U.A. high and possibly the best doctor in the world. Recovery Girl, this is Izuku Midoriya. He's the one I chose to inherit One for All." Yagi said trying to get introductions done as quickly as possible.

After hearing who the woman was, Izuku used his quirk on her. He was surprised to see more information than normal. In addition to her quirk, Izuku also saw a spread of what seemed to be stats. He saw a grading scale of one to five for strength and speed.

Is this how One for All is affecting me? Is it already starting to take effect? Okay back to my analysis. Her quirk is called Heal. It's a simple quirk that amplifies the body's natural ability to heal itself, but it drains the stamina of the person being healed. She also has to kiss the person she's healing in order to activate it. Izuku muttered to himself while creating a new entry in his notebook.

I'm going to have to ask him where he keeps that notebook one of these days. I swear he pulls that thing out of nowhere. Yagi thought while seeing his successor write in his mysterious notebook.

"Midoriya huh? Is he as reckless as his father was?" Chiyo asked, ignoring the boy's muttering. She was annoyed at the possibility of another Midoriya attending U.A.

"You knew my father?" Izuku asked after breaking out of his trance, but did not see the look of frustration on the elderly woman's face.

"Of course I knew your father young man. I've worked at U.A. for decades. He would always rush into dangerous situations head first and get himself injured. I can't even count the number of times he came to my office during his first year." Izuku was excited to learn more about his father's time in highschool. Anytime he asked, all he got were stories on how his parents met.

Yagi cleared his throat to get the other two's attention. "I called Recovery Girl here in case you get injured while we're testing One for All."

Izuku was about to ask what he meant, when suddenly green sparks began emitting from around Izuku's body. All three were confused by what was happening until Izuku figured out what was happening. The two adults realized soon afterwards. Izuku and Yagi locked eyes and nodded.

Izuku felt an unfamiliar power flowing through him. He walked up to the shoreline and focused the power into his right arm. He took a deep breath and threw a punch. The force of his punch released a blast of wind. The extreme wind brought the water level down by about five meters, and parted the ocean.

Izuku stood wide-eyed at the strength he just unleashed. The two adults looked at Izuku with concern. Izuku did not understand why they were looking at him like that until he realized the state his right arm was in. It was completely red and swollen up to his shoulder, and every single bone was broken. At that exact moment the adrenaline in his system wore off, and he realized how much pain he was in. Izuku clutched his shoulder and collapsed to his knees.

The damage was much worse than it appeared at first glance. Not only was every single bone in his right arm broken, but they were broken from the inside out. Almost as if several firecrackers went off inside his bones. The damage did not stop with his bones. He had torn all the muscles in his right arm as well and had some amount of internal bleeding.

Both adults rushed to Izuku's side as soon as he collapsed. Yagi held Izuku's arm steady while Chiyo performed her treatment. The pain left Izuku's body soon after, and his arm returned to its normal color. He took a minute to catch his breath and check out his arm. It was perfectly fine and all the pain was gone.

"Well I'm guessing that was One for All at one hundred percent. Although, that might have just been the maximum my body can handle. It feels weaker than when you do it All Might." Izuku said to himself as he sat down on a nearby bench.

"Of course it was young Midoriya. One for All always starts out weaker than the previous user. This way your body has a better chance to get used to the power. I will admit that your first smash was much stronger than my own." Yagi said before Chiyo hit him with her cane.

"Why didn't you give him any warning before he did that?" Chiyo said to Yagi before turning towards Izuku. "And you young man, why the hell did you do that without asking any advice first?"

"I'll admit that was pretty stupid of me. I felt that surge of energy and just went with the flow. I thought my body could handle it better than it did." Izuku clarfied.

"Well I suppose it can't be helped young man. There are plenty of kids who hurt themselves when their quirk first develops. Normally it isn't that extreme, but it still happens." Chiyo said comforting the boy.

"Do you have any advice for controlling One for All?" Izuku asked Yagi.

"You've got to feel it!" Both Izuku and Chiyo sighed at Yagi's explanation.

"Can you be more specific?" Izuku said with slight annoyance. Chiyo kept quiet during the rest of the conversation.

"You already know what it feels like to be firing at all cylinders. Can you describe how you felt when you threw that punch. Before you answer, I do not mean how much pain you felt afterwards."

"It felt like a huge rush of energy throughout my body, so I took that energy and concentrated it into my right arm."

"Okay you've got a good understanding on how to call upon One for All by itself, but you have no control as of yet. We also have no clue how it is affecting your existing quirk."

"Actually, I kind of do." Both adults looked at him hoping for an explanation. Izuku continued, "When I used my quirk on Recovery Girl, I saw more details than I usually do. Her quirk was displayed as normal, but it also showed me a spread of stats on a scale from one to five."

"Hmm… it's a start but we'll play it by ear until we're absolutely certain how your quirk is truly being affected. For now let's go off that. What sort of stats did you see?"

"Nothing much just her strength and speed. Seems like I get a vague idea of a person's physical capabilities, but I'm not certain how reliable those numbers are."

"You would be right to remain cautious about those stats. Thinking you know how strong your opponent is can lead to you underestimating them."

"Yeah that makes sense, but my dad always told me to never underestimate an opponent, and to always fight at full strength. It's a lesson my sister and I took to heart."

"A good philosophy, but with One for All, you're going to have to hold back."

"I am? How come?"

"Two simple reasons. The first reason should be obvious. Your body cannot handle the full power of One for All yet, so you will have to limit your power output until you can handle it."

"Yeah that is pretty obvious now that you pointed it out. What's the second reason?"

"The destructive power One for All can cause extraordinary amounts of collateral damage. Slip up and accidently fire off an attack at one hundred percent and you might kill the person you are trying to capture or destroy buildings that you are trying to protect."

"That makes sense. My first one hundred percent attack literally parted the ocean, and I'm eventually going to be stronger than that." Izuku said before a sudden realization hit him. "Wait you don't use one hundred percent all the time? Then what percentage do you normally use?"

"In my prime I usually stuck to about twenty percent maybe thirty percent on a particularly tough foe." Izuku was shocked to learn that a majority of the number one hero's incredible feats were done with less than half his power. Yagi gave Izuku some time to collect himself before he continued. "However every since I received my injury, my power has been slowly getting weaker. Before giving One for All to you, I would say I was about half as powerful as I once was."

"That's incredible. Your power will start declining even faster now that you have passed One for All onto me won't it?" Yagi's only response was a simple nod. "So do you have any tips on limiting my power output before we get back to training?"

"It helps to have mental comparison of the effects. Like an image you can focus your mind on. What did using One for All feel like when you used it."

"It felt like a balloon popping from being overinflated." Izuku said after thinking for a few seconds. The two adults snickered at his simile.

"It isn't far off of what actually happened. Your bones were broken from the inside out." Chiyo said in frustration.

"That's pretty, boring, but we will go with that for now. If that's the visual you want to go with, then either release some air or don't fill the balloon up as much. Whatever works for you. Have you recovered enough to try again?" Yagi asked.

Izuku nodded and got up. He channeled One for All into his right arm like before. The difference this time was, he did not throw a punch immediately. Instead, he focused on the mental image of the overfilled balloon and let some air out of it. The pain in his arm very quickly dropped. After he felt like he was at a comfortable level, Izuku threw another was no huge burst of wind pressure this time just what felt like a desk fan on high.

Izuku decided to experiment with One for All by switching the power between his arms while shadow boxing. He kept this up until he realized that doing so was against his normal fighting style, so he tried concentrating the power into his legs. Shortly afterwards, he incorporated kicks into his practice of the newfound power. Yagi was pleasantly surprised by how quick his successor was adjusting to the unnatural ability, but he noticed a mistake Izuku was making.

Izuku kept this training up for awhile until he noticed something was off. The actual speed of his punches and kicks increased, but his reaction time was slower. At first, Izuku tried reducing his charge time. No matter how fast he switched, his reaction speed never improved.

Come on. Why is my reaction time so slow? I can't possibly switch the charge any faster. How come All Might never has this issue? A realization suddenly hit him after that thought. Wait! When All Might uses One for All, his entire body transforms not just one part of it. I shouldn't be trying to switch the charge at all. One for All isn't some power I have to call on. It's just as much my quirk now as Quirk Analysis

Izuku then tried spreading the power of One for All throughout his body. Yagi was amazed at how quickly Izuku discovered that. Izuku kept the power flowing throughout his body and did the same training as before. After a few minutes, Izuku started to feel a strain on his body. Yagi noticed the pained look on Izuku's and decided to stop him.

"Let's take a short break young Midoriya. If you keep this up you'll hurt yourself." Izuku hesitantly agreed and sat back down. Yagi waited a few seconds before asking, "What percentage of One for All were you using?"

"I would say about two or three percent. It's hard to tell exactly what percentage because I just got this quirk."

"Three percent? I know you can handle more than that. Why are you limiting yourself so much?"

"I could probably handle about six percent, but I didn't want to take too much of a risk after that one hundred percent smash."

"That's actually pretty smart. Alright we will resume training after about an hour rest. If we keep this training up, you might be able to handle ten percent before the entrance exam."

"Got it, but I've got to make a phone call. If you'll excuse me." Izuku said as he walked off.

As soon as Izuku was out of earshot, the adults began talking.

"Are really certain he was the best choice to receive One for All, Toshinori? You aren't just doing this as a favor to his father are you?" Chiyo asked Yagi unsure of Yagi's reasoning.

"I am absolutely certain young Midoriya is the most worthy successor to this power. Who his father was made no difference to me. I will admit I may have jumped the gun and acted a bit prematurely. I won't say there aren't worthy candidates at U.A. or other hero schools for that matter. There's a spark in young Midoriya that is very hard to come by in other heroes. As far as I'm concerned, there's nobody more worthy of this great power than him."

"Well said. Truth be told, I had no qualms about who you chose but there are others who would disagree."

"I'm well aware, but I'll cross that bridge when I get there." Yagi said staring out to the shore. He noticed a single soda can had washed up on the beach. He took the can and threw it into a nearby trash can. Yagi could already feel One for All declining within him. He looked towards his successor and prayed that Izuku could succeed where he failed.