Right. Here's chapter 3. This is where more AU part of the story starts to come in.

III. The Scion

"You seem particularly aggravated today."

"Oh, do I?" Tōya said under his breath. Lowering his arm from having punched yet another training robot into the cement wall in front of him, he turned to see Kurogiri standing in the doorway wheeling in a cart with a bottle of what looked to be whiskey and two glasses. He spared another glance at the newest crater at the edge of the Talon training facility, before moving to press a switch inside his right gauntlet.

With a hiss, the mechanized armor he was wearing opened outwards, then stepped out onto the floor and walked over to Kurogiri. "You didn't have to do this, you know."

"Indeed, I didn't. But I understand this year would be especially trying, tonight."

"...yeah," Tōya replied, and raised his glass to Kurogiri. "Well, cheers, old man." He took a gulp of the whiskey, humming in satisfaction from the soothing burn of the alcohol, before he downed the rest of it. It was the year Shōto would be starting U.A., and it was the anniversary since he ran away, so he'd prefer not to have any reminders he didn't need, thank you very much.

Kurogiri nodded behind him as he took his own sip. "You seem to be handling the upgrades quite well."

Tōya snorted. "Yeah, well when you have a Quirk that's literally made to work with it, it doesn't really take a lot."

Although the perks that came with Sensei's protégé were pretty nice, he wasn't a fool—whatever great plan involving All Might the man had been grooming him for for eight years was finally going to be happening soon, but as long as he could still get what he wanted in the end, he would be content with whatever All For One had in store for him. And besides, he kinda owed the guy, what with saving his life and all.

After that fateful night of going overboard with his Quirk and faking his own death, he spent the next several days traveling as far as Tokyo, scavenging and stealing whatever and whenever he could in order to survive. Given how severe his burns were, it didn't take him two brain cells to see that any hospital he went to would immediately notify Endeavor of his continued existence, but it was either that or dying of infection and sepsis.

Except his desire of bringing down hell upon Endeavor overpowered his rational thinking, so he resorted to trying to use his Quirk to threaten anyone and everyone he could to treat his burns and get him medical supplies. But it ended up backfiring when a kind woman talked him down after he threatened her, even going so far as to give him money and food alongside applying burn cream on his wounds and replacing his bandages.

She even offered to take him in (which he very nearly accepted), until she mentioned that she would get help from a Pro Hero, and he realized that it was too good to be true, no matter how tempting it was. He train-hopped out of the entire city later that night, and as much as he wanted to, he never once tried to go back and apologize.

The next five years were spent doing jobs for various Villain organizations and black market dealers, as they were the only ones who would willingly get him medical supplies without asking any questions. It went like this day in and day out, until one day after replacing his newest set of bandages, he finally got careless and ended up pissing off the wrong guy, and was saved from being forced to use his Quirk to defend himself by Kurogiri, who was on orders to follow him.

Only after a brief time in a safe house having his wounds properly cleaned and treated by the other man, was the real reason why he was helping Tōya revealed—All For One had known exactly who he was from the very start, and even offered him a place in Talon.

His original plan was supposed to be using Cremation to make a name for himself as a Villian in the criminal underworld, alone, and work towards dismantling everything Endeavor had built for himself, and eventually reveal himself to his former family in the most psychologically-damaging way possible.

Until one day Sensei also offered to replace his Quirk, and even make him the ninth person to wield the Doomfist Armor—upgraded from a gauntlet wielded by the Scourge of Numbani and All For One's first Successor, to a full power-suit in response to the growing strength of Quirks each generation. Apparently, it used some of the designs from one of the German Crusader suits from the Battle of Eichenwalde.

"You've already cast away all ties you once had with your family—what's your Quirk compared to that? In this, you would truly be your own man, free of the shackles being Endeavor's son placed on you. You could become even greater than you ever imagined."

From African warlords, Talon leaders, European political dissidents, all the way down to the oldest son of one of the top Japanese Heroes. He would be lying if taking on the collective moniker of some of the most well-known Villains of the past two hundred years wasn't at least a little intriguing, but the sheer notion of being able to cause more damage than with Cremation was enough for him to accept.

That was the day Tōya finally cast away the Todoroki name and became Tōya Shigaraki.

Izuku lay prone in his bed as he slept, blissfully unaware of the world around him. That was, until he was forced out of said sleep by the blaring cacophony that was his cell phone's ringtone. Taking a deep breath, he mindlessly reached across his bed for the device and hit 'answer'.

"H-hello?" he asked groggily, tapping the 'speaker' icon.

"Midoriya-kun!" exclaimed the voice of Tenya Iida, causing Izuku to wince and turn the volume down. "The plan was supposed to be that we meet up at the train station before rush hour! I don't know how our homeroom teacher will respond if you're late on the first day!"

Izuku's eyebrows furrowed in confusion at the other boy's words, and checked the clock on his phone, which undoubtedly read exactly seven o'clock.

"Oh, shit." Immediately, he closed the call and shot out of bed and used Swift Strike in repeated intervals to grab his U.A. uniform out of his closet, before rushing to his bathroom to take a shower. Apparently, he ended up sleeping through the alarm he had set the night before. Usually, he would be woken up by either of his parents, but they had been gone since Saturday on a romantic getaway.

And Izuku, in true teenage fashion, immediately used the opportunity to stay up later than he was supposed to playing video games.

When he was finally finished showering and dressed, Izuku double and triple-checked his backpack to see that he had everything he needed, Izuku then made a break for the train station. After risking several infractions for public Quirk use and over an hour of anxiously checking his schedule on the train to Musutafu and calling Tenya to make sure he wasn't going to be late, he was able to make it to U.A. and the massive door that led to Class 1-A just shy of eight-thirty.

When he opened the door, he was met with the sight of Tenya reprimanding another student who had his feet placed on his desk.

"You are desecrating the memory of your predecessors and the ones who sat in that very desk!"

"Memory? Take a look around you, four-eyes—no one gives a shit."

Tenya looked visibly affronted by the statement, and was about to make his retort when he spotted Izuku standing in the doorway. "Oh good, you've made it," he began, walking towards him. "I was starting to get worried."

"I may or may not have left my room a mess," Izuku shrugged. "Anyway, how come you're not sleepy? You got up at five."

"Black coffee. What's your excuse? Didn't I specifically suggest that you not stay up past one o'clock?"

"Okay, but I was on a win streak. You can't blame me for wanting to play one more game."

"...Yes I can," Tenya deadpanned. "You would've been late and risked getting expelled if I didn't call you in time."

Having grown up in the same city, attended the same middle school, and had connections in Heroics, it was painfully obvious that Izuku and Tenya immediately bonded over their mutual interest in following their respective families' footsteps, although Izuku kept trying (and failing) to get his friend into video games. His brother Tensei, on the other hand, was a lot more easygoing and would regularly play Hero-Strike with him whenever he wasn't busy with Hero work as Ingenium.

"I'll never understand why you play that game so much," Tenya continued.

"Well maybe if you actually join us for once, then—"

"Hey, you're the guy with the spirit dragon!"

At the interruption, Izuku turned to see the brown-haired girl who helped him in the entrance exam. "Oh, you were the one who had the, uh—" He snapped his fingers. "—the grappling hooks! Like Spider-Man!"

"Yeah, that was me!" she replied excitedly. "Man, the way your arm went all glowy and how that dragon just went into the zero-pointer—it was like something from an anime!"

"If I may," Tenya interjected. "How did you come up with the idea for your support gear? I could've sworn I've seen it from somewhere."

Before the girl could answer, however, their conversation was interrupted by a fourth voice coming from behind her.

"Oi." Izuku could only look on in confusion as a very haggard-looking man wearing a black jumpsuit and a gray scarf around his shoulders appeared behind the girl, before the both of them stepped out of the way to let him into the classroom.

"It took an entire eight seconds for you all to be quiet. You kids need to be more efficient with your time. Anyway, my name's Aizawa Shōta and I'm your homeroom teacher," he said, before reaching into the sleeping bag he was dragging. "If you look inside your desk, you'll see these uniforms. I need you to go to the locker rooms and change into them and meet me out on the field. Now get moving."

After the sight of Katsuki Bakugō yelling 'DIE!' as he used his explosive Quirk on the softball, Izuku thought the Quirk Apprehension Test would have been a good way for everyone to get used to using their Quirks so openly in school, based on the excited murmuring coming from his classmates' reactions.

"Hell yeah! We get to use our Quirks as much as I want!"

"Oh wow, this is gonna be so fun!"

Their teacher, on the other hand, looked like he thought it was the opposite. "...Fun? Which one of you said that?" The chatter among the class immediately descended to an awkward silence as many of them collectively looked at a pink-skinned girl, who sheepishly raised her hand.

"Look, you're all new to this sort of thing, so I'll give you the benefit of the doubt," he continued, sweeping his gaze over the rest of the class. "But there is a time and place to have fun, and this shouldn't be either of them. Having fun means letting your guard down and relaxing, and in the field of Heroics, letting your guard down could mean the Villain you're chasing ends up getting away, or whoever you're trying to rescue ends up dying."

Aizawa paused for a moment to pick up another softball from the cart, before he turned back to the class. "So if after everything I've said that you still think this is fun, then consider this—whoever ends up placing last in this test is out of the hero course."

Izuku and the rest of the class were immediately in uproar, until Aizawa silenced them all with a raised hand. "This world is unforgiving—and I mean unforgiving—when it comes to making mistakes. For every new hero on the scene, there are at least three new Villains, whether they're just petty thugs or part of organized crime. About a hundred years ago, after the Omnic Crisis, there were barely any powerful Quirks back then, so the United Nations actually cared about enforcing peace."

"You mean back when Overwatch used to be around," Izuku said.

Aizawa looked at him. "Exactly. Midoriya, right?"

He nodded. "Yes, sensei."

Aizawa picked up another ball from the crate and tossed it to him. "You're up next."

The rest of the Quirk Apprehension Test for Izuku went as follows: he got a higher-than-average score in the ball throw because his Quirk couldn't really do anything. The other tests were more than easy enough for him to do very well in thanks to repeated uses of Swift Strike and his own physical ability from his father's training, and ultimately ended at second place under Momo Yaoyorozu. Subsequently, last place went to a rather short boy named Minoru Mineta.

And it was only until after he started to look like he was going to have a nervous breakdown, did Aizawa reveal the expulsion threat was a 'logical ruse' the whole time and was only there to make sure everyone tried their absolute hardest. It was a bit cruel, in Izuku's opinion, but he couldn't deny the fact it did get the job done.

"Hey! You guys!"

At the voice coming from behind him, he turned around to see the girl with the gravity Quirk (he never heard her name, come to think of it) walking over to him and Tenya, with a pink-haired girl in tow behind him.

"Hope you don't mind us tagging along," she continued.

"It's no problem," Izuku replied. "Uh...your name's Uraraka-san, right?"

She nodded enthusiastically. "Yup! I'm Uraraka Ochako. You're Midoriya Izuku and...Iida Tenya! Did I get that right?" At their nods, she then gestured to the other girl standing next to her with both hands. "And this is Hatsume Mei! She's the one who made my support gear for the entrance exam."

"'Sup," Mei greeted, casually waving.

"Wait, that was you?" Tenya asked incredulously. "By the way, Uraraka-kun—how did you manage to get the right paperwork to get it allowed? You didn't seem to be

"My parents own a support company," Mei interjected. "A bit of money in the right hands usually goes a long way."

Tenya looked like he doubted her, but he didn't say anything about it. "Is the gear inspired, by any chance? I could've sworn I've seen it somewhere..."

"Yup. You ever heard of 'Attack on Titan?'"

"No, I can't say I have," Tenya admitted, putting a hand to his chin.

"Okay, so it's this really old anime from, like, a hundred years ago, but it's about these really giant humans called Titans, and..."

Ochako turned to Izuku. "So are you guys going to the train station? You mind if we come, too?

"Well, uh," Izuku began. "My parents won't be back until, like, tomorrow, so Iida-kun and I were just gonna go get food at this ramen place. You guys wanna come with?"

"Uh, sure, if Mei's fine with it," Ochako said, looking to her friend.

The two of them looked over to see Mei biting down on her hand for some reason. "Huh? Oh—sure, I'm down."

"Sweet," Izuku said, before he pointed to the road with his thumb. "We, uh, we should probably get going before they get full. I heard it's a really popular hangout spot for the U.A. students."

Class 1-A's first official day of classes the next day were proving to be...lackluster, to say the least. Compared to the previous day where everyone was allowed to let loose with their Quirks, it was mostly the usual general education subjects, from English with Present Mic, Modern Literature with Cementoss, Modern Hero Art History with Midnight, and Math with Ectoplasm.

All in all, your run-of-the-mill Japanese high school experience. Up until their next class right after the lunch break, that was.

When they had gotten over the initial amazement that was Lunch Rush's cooking, Izuku, Ochako, and Tenya also spent a bit of time speculating over who their next teacher would be as they walked back to their classroom.

"So who do you think the next one is?" Ochako asked. "Is it gonna be another Hero?"

"I'm not sure," Izuku replied. "All I know is we're gonna learn about ethics, I think."

"Ethics of Quirks and Heroics, to be exact," Tenya corrected. "But I can't say I know who'll be teaching us. All that was said on the timetable on my schedule was that it would be announced."

There were still a few minutes to spare when the three of them went back to their respective seats, with several students spending that time either talking to each other or using their cell phones. It went as quickly at it came as the bell, however, as soon after the bell finally rang, and the chatter in the room quickly died down as the door opened to reveal...an Omnic.

Not just an Omnic—an Omnic that was floating.

"Good morning," the robot greeted with a slight bow. "My name is Zenyatta Tekhartha, and I will be your teacher in Ethics of Quirks and Heroics."

Immediately, there was murmuring around the class at his statement, because the last Izuku heard, Omnics weren't allowed to become teachers. Compared to western nations like the United States and United Kingdom, there was still heavy discrimination against them in Southeast Asia because of how much damage the Gwishin Omnics caused, before South Korea and China finally destroyed the omnium that kept producing them.

"I'm certain many, if not all of you have questions regarding an Omnic teaching at U.A.," Zenyatta continued. "So please—ask away."

Izuku—and a good three-quarters of the room, he noticed—all immediately raised their hands, and their newfound teacher surveyed the room for a moment before pointing to Izuku's general direction.

"And your name is, young lady?"

"Yaoyorozu Momo, sensei. Will we be learning about the effects of the Omnic Crisis and Overwatch's influence?"

Zenyatta nodded. "Indeed we will, Yaoyorozu-san. In fact, the majority of your first semester will focus on those two subjects, given how recent they were." He pointed to another student, this time at the opposite side of the room. "And your name?"

"Asui Tsuyu. I apologize for my rudeness, but why exactly are you allowed to teach here?"

Izuku—and just about everyone else in 1-A—promptly turned to stare at her. Okay, he was thinking it like everyone else probably was, he admitted, but you don't just say it like that!

"A perfectly valid question," Zenyatta chuckled. "Let's say Principal Nezu and I have...an accord, of sorts. I assure you, my employment here is legal." He turned his gaze back to the rest of the class. "Any other questions?"

"My Quirk is called One For All," All Might began, in his 'deflated' state. "It was passed down to me by my master, and from the users before her. It's a stockpile of power that's given me the ability to perform great feats of strength all these years of being a hero."

"...Why are you telling me this?"

"I'm called the Symbol of Peace because of what I represent to society, and it was my goal to be someone everyone could look to," All Might continued, before he lifted his dress shirt to reveal nasty spiral-looking scar. "Five years ago, I got this injury defeating one of the most dangerous men to ever exist—as a result, I can't stay powered up for more than three hours a day." He sighed and dropped the hem of his shirt, allowing it to cover the scar again.

"Eventually, my body won't be able to sustain One For All anymore, but because I'm the Symbol of Peace, criminals and Villains would immediately spread chaos the moment I announced my retirement." He looked back up to Izuku. "Your father and I have been friends for many years, and like with One For All, he shared with me his past as a Shimada. It's been my goal for thirty years to try to bring back Overwatch, and after I talked with your parents—and considering your, uh, unique heritage—I think you're the best person to make that happen."

"..."

"I'm saying that I would like you to become my successor and inherit One For All."

"No, I heard you the first time. Just...what?"

Izuku ultimately told him he had to think about it. However, it would have also been the absolute worst lie he had ever told if he said he didn't want to immediately say yes. You don't just reject the Symbol of Peace if he says he wants you to take his place one day, but that was the thing—from the moment he learned what Pro Heroes were, he had wanted to live up to his father's and Genji's examples, but with All Might's added in?

It was just too much baggage. He needed time to process this. But hopefully, it would be a long while before he actually had to give his answer.

After an enlightening class period of Zenyatta answering several questions about his class and his own past (apparently he was famous for helping with Omnic-human relations back in the day), as well as a brief overview on the history of Quirks and how that led to the creation of Omnics, the majority of the class immediately started talking among themselves with varying degrees of praise for their teacher.

To be honest, it had to have been the most interesting first class he'd ever had.

"I am...walking through the door like a normal person!"

Up until that happened.

I thought I'd be clever by making Tōya the ninth person to be called Doomfist use power armor as a step-up from a mechanized gauntlet and as an obvious parallel to OFA and canon Izuku using Full Cowl. But where's Tenko Shimura in all this? You'll see. Overwatch had a lasting impact on the world in this fic, after all, and it inspired much more than just the basis of Professional Heroics as everyone knows it.

The chapter title is meant to reference how the first 3 Doomfists (Savior, Scourge, Successor) all have titles that start with 's', so I'm just continuing the tradition.

Izuku getting OFA wouldn't go well with a lot of people because he would be pointlessly OP, but I came up with a solution—nerf OFA to where it only Quirkless people who get it (i.e. All Might and canon Izuku) can manifest it as strength, but for all the people who had it alongside a Quirk, that stockpiled energy goes towards their Quirk and their aptitude in using it. Thoughts?

Because Izuku grew up in Tokyo instead of Musutafu, he and Bakugō are actually meeting for the first time.

Tenya being an avid gamer seems a bit too far-fetched to do, but no one ever said Tensei couldn't be. Also, you can probably guess where Hero-Strike comes from. This'll be a plot point, don't worry.

By the way, I'm looking for a beta to review new chapters for any of my fics and bounce ideas off of if anyone's interested.