'Inko- mom is going to be home soon.'
The thought smacked some sense into Alastor as he calmed himself. The kid had gotten the gun from another victim he had tried to help. The boy had found him in an alley, his head a mass of blood and bone. But the boy had kept the gun.
Taking the gun in frail hands, Alastair scowled. His body was weak, but a farmer's dream if they harvested scars. He took the bullet and started the water, letting it rinse the wall off of any blood and grey matter. He walked the halls of an unfamiliar home on legs that moved on muscle memory. When he opened the door, it was what he somehow remembered but wasn't expecting.
Every wall was covered in a brightly smiling face.
'No wonder the kid was crushed. This guy was his religion.'
He began to think of a hiding place, but his body moved before he could react, lifting the mattress to reveal a hole in the mat. Inside were some notebooks that Alastor knew were things even Izuku had been afraid to admit. Placing the gun inside and replacing the mattress, he paused when putting the bullet in. Instead, he placed it in a drawer in his desk.
Getting back into the shower and rinsing the blood from his hair, he felt at the back of his head. For some reason, there were no remnants of the boy's death, only the scar of his forehead. The water began to turn red as Alastor began to plot.
The biggest factor in this world was the things called quirks. The boy had been born without one. The reason for all his hardship, the boy had still dreamed of UA, apparently the biggest hero school in the nation. Alastor was now in this kid's body, so he needed an excuse. His eyes had changed, and as much as he wanted to keep people off guard, and acted how the kid would act. To be plain serious, the boy was pitiful. Even Charlie had more backbone than this kid.
But the boy's optimism and pure hope for the world reminded him of Emily. The boy wanted to be a hero. Alastor wanted to be better. What better way to do that than to follow the dream of a boy who reminded Alastair of Emily so much?
He didn't know why it was his first thought; normally, he would be thinking of the best people to kill and who would make the best screams. Now, he was actively trying to do good.
'These balls of naive optimism are affecting me too much.'
Alastor thought as he washed his hair out, thinking of the comparisons. But he did not think of them as burdens; he thought fondly of them.
Back to business. His eyes suggested that he had similar powers to the ones he had as a sinner. If he did, then he had to make it seem as if it were his quirk.
The sensation of gagging as sludge filled his lungs, trapping him from the inside out.
'The sludge villain…'
"Of course, there is a way. There is always a way."
Alastor looked into the mirror at Izuku Midoriya. His grin looked like it belonged to the child, but he knew otherwise. His smile was sharp as he fleshed out his plans. He could have "awoken" his quirk as a reaction to his near-death experience. Explaining it as even though his body was quirkiness, his genetics had the ability for quirks for it. So when his body was in overdrive, attempting to keep him alive, his genetics mutated to give him a completely different quirk than his family. then he needed to know his limits. He was'ent the strongest sinner in hell for no reason.
The door at the front of the apartment unlocked, and Alastor breathed in deeply. He had gotten dressed in semi-formal clothes, a plain button-up shirt, and pants. Habits die hard; an insane situation does not excuse sloppiness.
He looked at his hands and at the scars as the boy's mother called out that she was home. He then noticed the faint red hairs on the back of his hand.
'A development for later'
He stepped out of his room, gaining an almost hesitant gait as he entered the kitchen of the small apartment, where Inko was putting food away.
"Oh, Izuku is that you? Can you help me with the rest of the food? I got a bonus today, so we could afford some better food."
Inko didn't turn around, only reacting to the sound of footsteps. Memories of the boy begging for hero merchandise filled Alastor's head, and he mentally scoffed at the boy.
'He couldn't see the financial toll these idiotic purchases put on her? Pathetic'
He sympathized with the kid, doesn't mean he liked him.
"Uhh, mom?"
Alastor made his voice hesitant, excited, but hesitant to share. The tone made Inko turn around. She took a moment to smile at him, then she gasped as her eyes landed on his eyes.
"Oh my god! Baby, what happened?!"
Alastor smiled sadly as his heart ached. It had been too long since he had felt a mother's care.-
( I don't know if it has been confirmed, but I am also going slightly off of the music video "Upside Down" for some backstory info.
-Ever since the battered of a father had killed her in a drunk rage. Alastor was happy to relieve him of his teeth.
"Mom… I don't know. I think it was because of the sludge villain incident. I-I think it awakened a quirk…"
He made sure to keep his voice unsteady and meek; he wanted to protect a hesitant hope so that Inko would believe him and not be suspicious of his developing quirk.
"I-I don't know, baby. When did this start? Are you ok? Does it hurt? Are you ok?"
Alastor was finding it hard to lie to this woman. She genuinely cared for her son, and Alastor was an imposter in her son's body.
"It started during the incident, I-i felt my eyes itch while it was happening. T-then it felt like fire across my body."
Inko seemed lost for words as she searched her son's face for an explanation. She couldn't tell what was real or not. But… it was possible. Nobody really knew how quirks worked, so it was possible.
So she accepted it, The mother trusted her son and did what she did best.
"Ok… I am so happy for you, Izuku… We… We should celebrate! You have wanted a quirk your whole life! This is a time to be happy!"
Inko supported her son, as any good mother should.
Alastor/ Izuku smiled.
"There's no need for that, Mom… I am just happy you're happy."
——————————————
A man who lived his life in sin, being one with the pain of loss and suffering.
He regained those things in hell.
Then he lost them again.
Will he protect the boys' only joy in life?
Even if the boy believed he was the cause of suffering?