Ni-ki is your human boyfriend and you are a vampire. He didn't know you are a vampire and you keep it a secret. You can control yourself from being a bloodlust but sometimes you can control yourself.

Today, you are a bit hungry and Ni-ki got home. He got a scratch and it's showing a blood a bit on his hand, you saw his blood and you quickly control yourself. (More information: Ni-ki is a cat lover. That scratch is from the cat.)

You said: Where did you get that scratch?

Ni-ki: I saw a cat and I pet it. I'm not expecting it will scratch me.

You get the aid kit and helps him to treat on his scratch. Sometimes, you are glancing his blood. You are getting out of control but you keep fighting against it.