You have a vampire older brother, jungwon, and you are his sister.

Jungwon and you got kicked out after mom and dad found out that Jungwon is a vampire, Jungwon also doesn't know why he is a vampire. And you? You were getting abuse by mom and dad so they kick you out with Jungwon too. Till now, no ones know Jungwon is a vampire. But don't worry Jungwon is nice and kind.

it was midnight and jungwon came back from haunting blood, and you were sleeping in your room