Chapter Text
They were arguing. But not like their usual 'let’s settle this with our fists and quirks' kind of arguing they did while they were at school. No this was more like when they were kids and discussing heroes, quirks, and the like that used to end with them wrestling playfully in the floors of their homes until one of their mothers pulled them apart. The argument was like that mostly because that is EXACTLY what their conversation/argument was about. A new student had transferred into the school from America into the support class and there was a lot of talk about her and her quirk. Also a lot of talk about the fact that she already had an American version of the Provisional Hero License (It's called a Hero Leaning Permit just so you know). Which garnered a lot of attention from the Hero course students and questions of why she wasn't in their class but none of the teachers would answer their questions. And Izuku had A LOT of questions.
"No listen Kacchan! Listen! What I'm saying is if what I've heard of her quirk is correct then you'd probably have to fight her quirkless!"
"Fucking so? You think I'm going to let some two-bit dog eared American Extra beat me in a fight even if I can't use my quirk? Fuck off with that shit." Katsuki yelled in the stairwell, his voice bouncing off the walls around them as they walked up to Izuku's apartment.
"She has her Provisional License! Aaaand she's a wolf not a dog!"
"SO?! I don't give a flying fuck what she is! And her license doesn't even work here you dipshit. She'd have to go to the Japanese test! And either fucking way I’d still kick her ass in a fight!"
Izuku groaned from in front of him and Katsuki could practically feel the eye roll the other was doing as he pushed up the door to the floor they needed. Katsuki got ready to start a new argument before he noticed the nerd had stopped just past the door of the stairway. "What the fuck nerd? Move it! We have to get this assignment done tonight." he growled out before he looked over the green haired teens head to see what was making the other stop. Only to promptly freeze to his spot as well.
Oh .
"MOM!"
"Auntie!"
The hallway leading to the Midoriya apartment had scorch marks along the wall and around the door frame of their apartment. Izuku was already at the apartment door flickering of green lightning bouncing off of him as he pushed the door open roughly and Katsuki quickly followed after a low growl building in his chest.
"Mom!"
"Oh Izuku! I'm making your favorite so why don't you go ahead and get cleaned up." Katsuki heard Inko call out as he stalked into the apartment red eyes taking in the clear fight that had taken place and that was partially cleaned up. He turned to the kitchen and glared around the room before his eyes settled on Izuku and Auntie Inko as the other teen tried to get his mom to look at him.
"Stop it, Izuku just go get cleaned up for dinner."
"But mom! Just look at me! Did he do this?!"
"Auntie." That did it. At Katsuki's voice Inko turned around quickly to see him, green eyes wide like she had never heard him come in, and he got a clear look at her face and clothes. The ends of her sleeves were charred, there was a cut above her eye, her lip was split, and there was a growing bruise in the shape of a handprint across her jaw and cheek.
Katsuki saw red and knew that Izuku was feeling the same as the words ' fucking bastard ' left the other teens mouth before he stalked off, ignoring how Inko scolded him for cursing, to get what Katsuki assumed would be their first aid kit.
"Auntie. Did he do this?" He asked slowly as he moved forward to look over the damage done to her. Anger boiling under his skin to the point he could feel the palms of his hands get damp with his sweat and warmth spread over them ready to pop off an explosion should the bastard show up.
"Katsuki it's good to see you dear. Are you staying for dinner?"
"Auntie sit down." He ignored her question just like she ignored his and crowded her out of the kitchen to the table to sit. A deep frown pulled at his lips as he looked at the cut and her split lip careful to only touch gently and careful to not touch the wound directly. Izuku returned with the first aid kit. Oh he was going to hurt that bastard as he watched Izuku's eyes fill with tears looking his mom over once Katsuki moved out of the way.
"Mom. Please… just answer us… Please. Was it him?"
"Izuku there is nothing to bother with. Now let me up so I can finish dinner." Inko skirted the questions once more and tried to get up from her chair only stopped by Izuku's hand on her shoulder while he was applying ointment to the cut above her eye.
Katsuki shifted on his feet and gave another look around, seeing a picture frame on the ground and broken glass around it and even more scorch marks on the wall where it had used to hang. He looked back at Izuku and Inko before he crouched down to be eye level with his Auntie. "Deku go get an ice pack." he said not looking away from Inko.
He felt Izuku shift on his feet like he was hesitant to leave his mom before he heard footsteps head back to the kitchen.
"Auntie… I just want you to answer one question for me… Just one. Where is he? That's all you have to answer. So can you do that for me? Tell me where he is?"
"Katsuki…" Inko breathed out her own tears filling her eyes as he looked at her. He whipped his palms off before he took her hands in his own, rubbing his thumbs across her skin gently. He could hear Izuku standing by the entryway not heading back in yet waiting for Katsuki to do what he needed to get the information. "… He … He said he would be back later…" she said with a sob.
Katsuki nodded and leaned up from his crouch to wrap her up in a hug letting her cry into his shoulder. Izuku joined them and wrapped his own arms around his mom, whispering to her that it would be okay that 'Me and Kacchan are here now.'
Once her tears subsided Izuku gave his mom a watery smile pressing the towel wrapped ice pack to her cheek. "Let me and Kacchan finish dinner, okay? Why don't you go get in the bath and relax and get changed okay?" Inko didn't even fight them on it and went off to her room in the apartment.
"Kacchan."
Katsuki hummed in question and looked over at Izuku. Green eyes looked back at him, tears dry and long gone and they simmered with anger and hate that rivaled his own to the core. Katsuki felt a small shiver run up his spine before the other teen even spoke and a grin spread across his face.
"We are going to commit a murder tonight."