Kamino Ward, Yokohama City, Kanagawa Prefecture

A black haired teen walked down the street of an abandoned neighborhood and stopped at the entrance of a building before he entered,

Flashback, Citadel

Ootsutsuki Naruto was doing paperwork, when he heard a sigh, "What do you want?"

Naruto of Earth9041110 walked toward the desk and tossed a tablet onto it, which showed NarutoX breezing through the Sports Festival, "Boss, the speedster is breezing through this world. How long before he gets bored?"

Ootsutsuki picked up the tablet and swiped through Naruto's battles and frowned when he saw his Rinnegan almost activate, "Get ready to go to this world." He said

"To bring him back?"

"No, to make sure he doesn't grow bored." Ootsutsuki said looking up at him, "You will be inserted as the long thought dead son of All For One, under the name Menma."

"Sir, my traveling to other worlds is over."

"Don't care, you were worried about X growing bored well you are to make sure that doesn't happen." Ootsutsuki asked before he snapped his fingers and Menma was gone

End Flashback

Menma sighed in annoyance, "You try to help your boss, and end up getting saddled with more work. Should've kept my mouth shut." He thought

"Who is there?!" A voice yelled as Menma walked forward ignoring all the equipment

"Hello, All For One." Menma smirked

The eyeless man frowned, "Lot of guts for you to come here. Who are you?"

"I can tell you, but I'll just have to jog your memory. Remember way back when you grew bored of the villain thing. Thought maybe your brother was right, and that humans could be trusted, that we could coexist. How you gave up being All For One and settled on being Ashina?"

"Who are you?" All For One hissed as his killer intent flooded the room,

"I'm getting to that." Menma said unaffected by the killer intent, "You fell in love and settled down even had a child. Then your enemies found out where you were, and in there eagerness to make a name for themselves set your home ablaze thinking you were inside, but you weren't though your wife and son were. You never came back to us."

"...Menma." All For One whispered

"You abandoned Okaa-san and me to our fates."

"I didn't I returned to the house burned to the ground. I killed everyone involved." All For One replied as Menma gazed at him, "W-where have you been?"

"We have a lot to discuss, father." Menma said walking closer

Hosu

Izuku carried Tenya and Native but a wall was destroyed by a Nobu causing debris to block his exit, as the flying Nomu roared at him

Naruto ducked under a sword slash and dodged to the left before he kicked the back of Stains knee, then his chin as the villain buckeled sending him flying back, turning toward the Nomu he shot forward before his senses screamed at him to dodge which he did and a dagger flew by him and stabbed hilt deep into the back of Izuku's shoulder causing the boy to scream in pain and collapse,

"Midoriya!" Tenya screamed

"Shit." Naruto thought before he turned to see Stain coming down on him with a sword held high, when fire overtook the Nomu and headed for Stain, who kicked a wall to dodge

"Izuku you okay?" Naruto asked keeping an eye on Stain

"Y-yea, but I can't carry Iida and Native." Izuku said clutching his shoulder before Todoroki dropped down from a pillar of ice

"Bout time you showed up." Naruto said as Shoto walked over to stand beside him

"You only sent out a location. I told the pros, so they should be here any minute." Todoroki said, "What's the plan?"

"We hold him here till they get here, and protect those three. He cannot escape."

"Got it." Shoto said, before he glanced back,"Hold on the pros will be her-"

Naruto caught the blade heading for Shoto's face before Stain appeared in midair with his sword ready, "You got some good friends, Ingenium." He said before he swung his dagger at Naruto and Shoto but Shoto created a block of ice to block it,

Stain and Shoto looked up to see the sword in midair before Naruto punched Stain in the face

Rolling away, Stain sneakingly licked the blood on his dagger causing Naruto to grunt as he felt his body freeze up, as he noticed a small cut on his forearm, "Dammit, he got me." Naruto said trying to force his body to move

"What's wrong?"

"Can't move, don't let him cut you." Naruto said as Shoto grunted before Stain rushed in but an ice attack caused him to jump back as he grabbed his sword and containued to block the ice attacks, and dodge the fire

"What are you guys doing? I'm the one the Hero Killer wants, I inherited my brothers name, I need to avenge him." Tenya said beside Midoriya

"Your Ingenium now, strange." Shoto said stopping the fire before slamming a hand into the ground as he created more ice

Naruto was watching Stain intently, and took a deep breath, before Shoto shot another fire attack after Stain sliced his ice fire, and with an exhale of extreme wind the fire turned white and intensified

Stain's eyes wide jumped to the top of a building getting out of the alley, Naruto's finger twitched before he began to vibrate, and he vanished

Stain's senses alerted him to someone behind himand he turned into the jab from Naruto sending him down to the streets,

Stain tried to maneuver himself with his daggers but found all of his blades gone before Naruto holding onto said blades kicked him and drove him down into the road

Izuku watched in awe before he frowned and looked thoughtful

Naruto stepped off the unconscious Stain, and gave a thumbs-up, causing his friends to smile, before their eyes widened when a figure appeared behind Naruto and quickly Naruto jumped away

Menma smirked at Naruto who landed beside Shoto, "Nice reflexes." Menma commented as he held one of Stain's blades in hand that had been poised to stab Naruto

Naruto watched Menma, "I didn't expect for the Hero Killer to have allies." Todoroki said

"Me neither." Naruto said as they watched Menma pick up Stain, and narrowed their eyes

"See you around." Menma smirked before Naruto shot forward to prevent Stain's escape but Menma stomped on the ground destroying the alley

Naruto across the street dropped Todoroki, Native and Tenya while he gently set the injured Izuku down

Tomura was wide-eyed seeing Stain be beaten and taken away, annoyed he was about to begin scratching his neck, when his shoulder was grabbed and he founded himself before All For One, "Sensei?"

"Tomura." All For One greeted, motioning to Menma who stood beside him, "Meet my son, Menma Shigaraki."

"Son?" Tomura asked wide eyed

"Yes, meaning your no longer necessary." Menma smirked causing Tomura to glare

"Wha-" Tomura was interrupted when Menma appeared in his face and slammed his forehead into his own

"Learned it!" Menma laughed before he grabbed Tomura by the throat, and lifted him up into the air,

Tomura tried to use his quirk on Menma who smirked, as nothing happened, "My quirk allows me to replicate Quirks to the level of the user's mastery, and grants me immunity to the quirks I've copied."

Tomura looked at him in shock, and horror as a dark smirk lit up Menma's visage, "Bye."

Tomura exploded in a shower of blood

"Nice." Menma smirked flicking the blood for his hand

"He would've been a great psychological attack to All Might."

"Maybe, if All Might was still growing weaker." Menma said, "The Symbol of Peace has been everywhere, performing feats of strength not seen since he first burst onto the scene. And you are still on your last legs."

"It's time I've passed on my mantle. I was grooming Tomura to take my place, but you will be the one." All for One said as Menma smirked before he noted pictures in what used to be Tomura's pants, and picked them up

"Good, because I have a plan." Menma said

With Naruto

Naruto watched as Izuku, Tenya and Native were out into ambulances to get checked out at the hospital, "The guy that saved the Hero Killer had a teleportation quirk, and super strength."

"A warpgate?" Gran Torino asked more interested in the teleportation

"No, like he just blinked into the alley." Nick said

"Interesting. Last person with a quirk like that was my sister."

"Whatever happened to her?"

"She fell in love with a bad person, and my father didn't approve so she ran away and died years later." Gran Torino said causing Naruto frown before the two left

2 Days Later, Hospital

Naruto, All Might and Gran Torino looked at Midoriya in surprise, "Say that again." Naruto said

"The hero killer's blade, cut into my rotator cuff, the doctor said that with the repeated breaking of my bones has left small fractures. Meaning I can't be the successor you wanted All Might." Midoriya said tears streaming down his face, before he looked to Naruto, "I want you to take the quirk, Naruto. I'm going to focus my time on healing up and becoming a quirk specialist. It may not have been my dream but it'll lessen the worry my mother has, and I can still contribute something."

"Izuku, don't talk like that we can ju-"

"Narutoboy. This is the hero Deku's final request." Gran Torino said causing Naruto to frown and sigh

"I'll do my best." Naruto told Izuku who smiled with a nod

With Stain escaping and Izuku retiring to go to the Department of Management, Naruto knew he needed to get stronger and stood in the hallway by the door as Class 1-A all showed up to support Izuku,

"Its my fault." Tenya said as everyone looked at him,

"Don't say tha"

"It is." Naruto interrupted Ochako causing everyone to look at him as he glared at Tenya over his shoulder his Sharingan active and spinning, "We trusted you with the position of being the leader of our class. We all know how much your brother means to you and understand why you went after the Hero Killer but you are training to be a Hero, and your supposed to lead by example not act like a child. You didn't care about the safety of the civilians or Native who was injured right in front of you. You were prepared to throw away your future for revenge, and because of that Izuku has to stop chasing his own dream."

"Naruto-" Momo began

"He's right." Tenya interrupted ashamed, "I was going to kill the Hero Killer for what he did to my brother. I am not mature enough to lead the class at this time so Naruto I give you back the position of Class rep. I need to learn to control my temper better before I can say I deserve the position."

Naruto walked away not saying anything

Week Later

The U.A sponsor internships came to an end, and some pros elected to extend them longer, having the students come to the building where they would finish their homework, go on patrol, and learn more about what was expected of them as Heroes.

Bakugo elected to find someone else he didn't really learn anything he wanted as Best Jeanist focused on grooming Bakugo's hair and his attitude with little success.

Everyone was talking about how their interns went, while Naruto glanced over to the empty seat that used to be occupied by Izuku, before he glanced over to Momo, when she aced a hand onto his arm, "Midoriya is okay, that's all that matters in the end." She said

"Yea." Naruto nodded, looking to the symbols on his palms, "I just need to be stronger. After my parents I had promised myself that I would be so strong that no one in my vicinity would ever be hurt again. Just feel like failed in keeping that promise is all."

The bell ringing signaled everyone that it was tome for their next class and they all stood up and made their way to Ground Gama

At Class 1-A's Hero Basic Training Class, All Might announced their lesson will consist of a rescue training race through Field Gamma a metal labyrinth densely packed with steel factories. He explains that the class with the exception of Naruto who had to talk to the Cheif of Hosu Police in the principal office, will be broken up into six three-man groups and race one group at a time towards a distress signal sent by the Symbol of Peace somewhere inside. The first group consisted of, Tenya, Mina, and Hanta.

When the race begins, Sero gets out to an early lead only to be suddenly passed by Mina who surfed her acid along the pipes, and made constructs to help her stay in the lead, and eventually won

All Might commends the group for improving their abilities since the beginning of the school year and reminds them to prepare for the end of term test.

Naruto left the office after giving the description of the guy who saved the Hero Killer, as he was walking he noticed his surroundings change and blinked looking around before he found himself looking at Ootsutsuki

"Who the hell are you?" Naruto asked

Ootsutsuki blinked and frowned, "As I thought, you don't remember anything before this world." He said

"What?" Naruto asked

"Nothing, I'm just here to give you back some of your powers for the fight to come." Ootsutsuki said before he snapped his fingers and Naruto grunted as a searing pain appeared in this heads as he began to rub them in irritation, when the pain subsided he looked up to find himself back in the hallway as a black/gold RinneSharingan was active before they vanished back to his original blues,

"I'm exhausted." Naruto sighed walking to class, and sitting down, and cradling his head,

Aizawa got the class attention, "Before you all go one thing. It's almost tome for summer vacation but don't get to excited. You can't just relax an entire month. Your internships those of you still participating will be put on hold for the training camp in the woods."

The class yelled in excitement, "Hanging out with everyone for the summer is going to be so cool!" Mina yelled

The class quickly quieted down when Shota's eyes flashed red, "However those of you who don't pass the final exam before this semester is over, will have summar school."

"Everyone do your best!" Kirishima yelled

*This is so stupid." Bakugo groaned

Finished