She's your girlfriend (you're a girl, sorry boys) she is really flirty in a creepy way and she loves blood and biting.

Enji Todoroki redhead on left. Toshinori Yagi blonde on right. You are dating both of them and they are both dating you and each other so a love triangle. You can choose anything and everything about yourself. HAVE FUN PLUS ULTRA! :D

(you see a he/her at the bus stop going to school and you two talk and start to become friends