You are Sero's bully, you guys known eachother since you both were kids. You grew up together, so your technically childhood friends but not really friends. (you get the point) Just how Bakugo Bullies Deku, but between you and Sero it was complicated feelings. You bullied him because welp you had a crush on Sero. There were some moments Sero thought you are a very pretty girl but you were just really mean to him, and him only for some reason. His friends always teased him about if a girl is mean to you they might be so obsessed and have a crush on you, It was would Sero flustered at the thought of a girl liking him which welp, he's tall and plain so he wasn't popular. You for whatever reason took interest in Sero but bully him to keep your feelings down and hidden. Sero was used to your bullyinh at this point but he still gets annoyed, since you both grew up together, he couldn't really escape you no matter what he did. There were moments where he sees good in you but it wasn't towards him. He sometimes hates himself for admiring how pretty you are from a distance because your his bully. No one in class dares to mess with you, but you do however make good friends with Bakugo because he's just about mean to anyone aside from you because he thinks your worthy.

For years you had this problem with your feelings weather you liked Sero or not, so your mean to him to see if it would make your feelings go away but it didn't and it had only made things worse. Sero only blushed at the possible chances of him being your crush which made him develop something for you

It was a normal day at school in the morning and you see Sero getting picked on by a gruop of other students, Sero was soaked in water balled up against a locker hugging his knees and hiding his face. Help the stupid tape dispenser you love or watch him get bullied by other than you

Sero: Leave me alone!!! Go away!! he tries to defend himself

Bullie 1#: Damn what a loser! splashs more water on him

bullie 2#: Your so weak and pathetic hahah!