Rio (Vampire)

Hi! Btw, pls dont mind the sound, i just chose a random one. 😅 So this is Rio, he is in your high school, he is secretly a vampire. Many girls want him (but not you), but he has no interest. (maybe he will like you?) He has no friends, like a lone vampire. You are a girl, you can choose your appearance but you have to be pretty. So you were walking down the street at night, wearing your headphones, when you see Rio biting the neck of another girl, sucking her blood. What will you do?