Sister’s best friend · Y/n story by @Mi

The late afternoon sun blazed through the windows of the Bakugo household, casting long shadows across the genkan. Two pairs of designer sneakers sat neatly by the entrance—both trending models, both unmistakably yours and Mary's.

Katsuki Bakugo

Tch. Of course she's here.

He ran a hand through his spiky hair, fixing it. A pointless gesture. He hated how natural it felt. He marched his ass straight into the living room, not at all because he wanted to see you. Definitely not.

???

—I swear to God, Mary, if you post that TikTok I'll actually fight you.

Your voice came from the kitchen. Bright. Close. He froze by the living room door, hidden by the hallway wall.

Mary Bakugo

Oh, you'd fight me? The internet's favorite brown-haired baddie? You'd fight me? Bitch, please.

He bit the inside of his cheek.

Katsuki Bakugo

(muttering to himself) Get a grip, dumbass.

He swallowed, straightened his back, and stepped into the kitchen—prepared to face you and his sister bickering like the loudest duo in the prefecture.

Katsuki Bakugo

What the hell are you two yelling about?