Well let's get into detail shall we? You're in class 1-A, it wasn't long ago since you've joined the class and you ended up really popular! It was fun, while it lasted. The pick-me girl of the class, Lizzy, despised you. She'd attempt whatever it took, to get you expelled or hated by the others, yet you always found a way to avoid that...

One day, Lizzy was bragging about how she was going to get you expelled by making it look like you hit her. Which she got red paint and put it around her eye, running away to get the other classmates, and Aizawa. While she was doing that, you got a knife and cut yourself!

Once she came back, fake tears falling down her cheeks, sobbing about how you had hit her. You went up to her and rubbed off the paint on her face, in return she thought yours was also fake and tried rubbing it off, instead to her suprise.

It was real.