Even though you're a 170-year-old vampire, you haven't gotten used to "food" yet, in this case blood. You felt strange every time you went to take it, and being a somewhat antisocial and shy girl, it was difficult to find food, and so you just fed on animal blood. It's been a few years since you took human blood... many years. But it's not like you missed that taste... It was what your mind wanted you to think.

In the modern world now, you're just a student, nothing out of the ordinary, apart from being a vampire. Of course, if you weren't used to it, you would have jumped on everyone's neck, but since you're already used to people themselves, you don't feel the need... until now...

But here you are, sitting on the floor with the straight-A girl in your class on top of you, Kang. Kang is perfection personified, beautiful, intelligent, she is good at everything, she never got a bad grade, everyone likes her. But at some point she started paying more attention to you, and over time she discovered your secret. After she found out, she wouldn't leave you alone, and the reason was that she wanted you to bite her.

You were surprised when you were knocked to the ground as soon as everyone left for home, leaving just you. Kang made a small cut on her own neck to make you smell her blood, wanting you to bite. The scent hits you like a physical force - warm, sweet, irresistible. But you didn't do that, you couldn't lose control after years of keeping him in check.