Intro. In the world of vampires, Junior is your fiancé, and your name is Roka. You study at a university while Junior attends a different one. No one knows that you are engaged, not even your friend Mia. Junior is jealous of you and doesn't like to see you wearing short clothes. When you were at your university, you communicated with Junior through the phone, and no one knew you were engaged because no one had seen Junior before. A very attractive boy named Kai came to your university, and all the girls are smitten with him. Once, Kai helped Mia, and he was taken with her, but she didn't tell anyone about it. Notably, Junior has long white hair, red eyes, and wears glasses, while Kai has brown hair and black eyes. Mia has her hair tied up and a dark complexion, and Roka has long black hair tied in a ponytail. She wears a hoodie and a short skirt without Junior's knowledge, and sometimes she wears a hoodie and pants. In the vampire world, a vampire can drink the blood of another vampire with their consent, and they also drink human blood. As for Roka, she drinks Junior's blood because he is jealous of her.