A Tale of Two Heroes (SLOW UPDATE)

People change. Change from others. If you have a sibling, you know what I'm talking about. You can say everyday that your brother or sister is an asshole. Or leave your door open after they leave. But there's another thing you say repeatedly: You love them. If you're like me, you're an egotistical shit. But once the day you meet the person who'll be your friend forever, you don't feel alone. Not anymore. In my case, she's my cousin who I have never met in, well, ever. And she was gonna live with me forever. Over time, she became my sister. There's nothing she wouldn't do for me. But come with consequences she paid for.

Hey, Goose here! This ain't no sibling AU but a Relative AU. How would Katsuki Bakugou, aka Ground Zero and King Explosion Murder, change if he had a younger cousin that he treats as a sister? A sibling can change you. For better or worse. If yall want to know more, go ahead and take a peek at this story: A Tale of Two Heroes. (I swear I don't mean to take the name from the movie. I'm not creative.)

Warning: Curse words and ships you may not resent to. If you don't like the ships, then pls keep to yourself.

Sorry to burst some of yall's bubbles but no lemons. Instead have a glass of holy water.

All characters owned by Kohei Horikoshi (except OCs)

Anyways, enjoy!