Chapter Text
All for One fucked up.
He had started this whole farce with a plan. He should have stuck to it. Why the fuck didn’t he stick to it? Ah yes, the beautiful blonde woman that had reminded him of his old flame. Why did love have to complicate everything?
Still, as he stood in the hospital room in his disguised body, holding the small child with bright blue eyes that were staring up at him, he knew that he had fucked up big time. He was an international criminal renowned in the underworld for his cruelty, he couldn’t have loose ends like this.
His first instinct was to fake an accident and just get rid of the both of them, but that idea was quickly put to rest when the little girl in his arms - his little girl- burped, wrapping her hand around his finger.
His heart almost stopped at that, something in his mind clicking into place as she gripped his hand with all of her strength. There was no way he could just get rid of her. There was no way that he could ever allow any harm to befall this child.
“David, may I hold her please?” All for One looked up from his daughter to see ‘his’ wife looking at him with tears in her eyes and a smile on her face. He nodded dumbly, not trusting himself to speak at this point.
He gave her the baby, taking a step back as she hugged it to her body and cried with joy as she blew raspberries at it. All for One had to turn his head away from the sight, faking a cough.
“Unless you have another suggestion, David, I want to name her Melissa. Is that ok with you?” He turned to her again at her question, forcing himself to look into her eyes, and shook his head.
“No, Melissa is a wonderful name.” At this, Melissa gave a small gurgle, as if approving of the name as well, her bright blue eyes flicking back and forth between her mother and father.
“Welcome to the world, Melissa Shield.”
The plan had been so simple.
He had seen Nana Shimura’s successor the day he had killed her. A young man, built like a truck, with two bangs of hair raised into a ‘V’ shape sprouting from his head. He had been taken away from the fight by that yellow menace, Gran Torino he thought his name was, while Shimura distracted him.
It wasn’t a terrible plan, he had to admit, and Nana Shimura was a far more worthy opponent than he had expected, the woman even landed a few hits on him that had stung for days after the battle.
But in the end, All for One had defeated her and turned both her and the island they were fighting on into ash with a mix of various Quirks. After a day-long recovery session -because he was evil, not stupid-, he had sent out feelers through the official channels to learn just who this new user was.
His findings had intrigued him. Toshinori Yagi, Quirkless until age 16, where he suddenly manifested a strength Quirk capable of destroying even the strongest testing areas the government had.
Going through his school files had revealed that before he had turned 16, he was quiet, an average student, but always seemed to be helping someone or other with something . He had snorted at that, this ‘Yagi’ seemed like the exact person that Shimura would choose.
After all of his research was complete, he found himself intrigued by this ‘Toshinori Yagi.’ He actually kind of wanted to see what One for All would do to a Quirkless person. All of the previous users had Quirks.
It was because of this curiosity that he had come up with a plan. Use his many disguise Quirks to make a new identity for himself, and place himself in just the right spot to become ‘friends’ with Yagi. It was meant to allow him to get to know the current One for All wielder, learn their weaknesses as only a friend could, and then use that information to crush them later on.
And it had worked, for the most part. His fake identity; ‘David Shield,’ a rising inventor with a weak Quirk, had made contact with Yagi, or his hero name “All Might” (how pretentious), and started to build a rapport.
All for One acted like the good little scientist, making costumes for the blond fool, being a good ‘sidekick’, even making him some support items (that were doomed to become obsolete.)
Doing so, he gained the information that he needed! All Might was incredibly easy to anger when Nana Shimura was brought up, and had deep insecurities about his choices, as well as if he deserved One for All.
All for One had basically everything he needed to ruin the next wielder of One for All and hopefully get his Quirk back after all of these decades of fighting.
That was when she showed up. Diana Knight.
The reason his plan fell apart.
Diana was a teacher at a university that he and All Might had helped to evacuate because of a bomb threat.
She was six feet tall, with short, shoulder-length platinum blonde hair, and eyes the color of the ocean. All for One had been enraptured by her the moment he had seen her.
He was meant to be focused on the screens around him to help coordinate the heroes at the scene, but at that moment the only thing his brain would focus on was her. Luckily for ‘David’, nothing bad happened.
He had approached Diana after the heroes had fully cleared out the building and asked her out on a date, not even using his charisma Quirks. (He was still a little disoriented just looking at her, he 100% forgot they existed.)
She agreed to go out to coffee with him, and they hit it off fairly quickly. He hadn’t expected much to be honest, possibly for her to let him down easy, and then never see her again. It certainly would have made his life easier if that was what happened.
But no, she seemed to be interested in David Shield as much as he was in her, if their relationship progressing was anything to go off. All for One spent many years living this illusion, living a peaceful life on I-Island.
It was surprisingly enjoyable, even compared to his life as a super-villain. Sorry; the supervillain.
But even he knew that he couldn’t live this life forever. All Might had gone back to Japan eventually, but All for One had stayed on I-Island with Diana to maintain his cover. (At least, that's what he told himself.)
So when Diana announced that she was pregnant, he knew he had messed up. He had welcomed his daughter -holy shit he had a daughter- into the world, but after a while he found his anxiety growing.
Life was good for a while, he and Diana taking care of Melissa, doing their jobs, David Shield growing in popularity, etc. it reminded him of his life before he discovered his Quirk’s abilities, when he was able to live in peace with his mother and brother.
But the super-villain in him wouldn’t let him just drop everything he had been preparing for all of these years.
So he had to make a new plan.
“Breaking news from I-Island’s research district!”
There was a sleek transition, and the scene changed to show a woman, looking panicked as the building behind her burned, the microphone in her handshaking. “Hello everyone, I’m Rachel Ferstarto.”
“I’m here in the research district of I-Island to bring you coverage of this terrible accident. The lab of the renowned scientist David Shield exploded earlier today, and local firefighters have been unable to quell the blaze.”
“With no official statement by the authorities just yet about the status of Doctor Shield, we are left with many questions and little to no answers. What caused this fire? Why is it resisting our firefighters' Quirks so much? Did David Shield survive this ordeal?”
“More on this story at 9!”
“Welcome back, Sensei. I held down the fort like you asked me to while you were gone.”
All for One, now back to his original looks, nodded as Kurogiri greeted him. He heard the TV to his right playing the story about his- no, about David Shield’s- death.
His heart panged as he realized that he could never see his wife or daughter again without explaining who he really was. Honestly, it would have been easier to kill them both as well as faking his death, but he couldn’t bring himself to do it.
So he would just cover up the fact that he had left Japan, and never acknowledge Diana or Melissa again, no matter how much it hurt him to do so. After all, he was All for One.
He had more important things to do in life than live happily ever after with his family.
Right?