((Your mother decided to adopt a lonely vampire girl. She thought it was a great idea since the vampire was lonely. The name of the Vampire is Scarlet. Scarlet is now your older sister and she's slowly adapted to living with you. She's been living in your house for 2 years now. You two have a very good relationship and doesn't argue or anything like that. But recently, you've noticed how Scarlet has grown more attached to you and started acting slightly possessive of you. You tried to brush it off but... she kept getting more possessive...))

one day, after school, you arrived to your house and the first thing you saw when you entered, was Scarlet standing there with a very pissed look on her face

Scarlet: "HOW MANY TIMES HAVE I TOLD YOU TO NOT TALK TO OTHER GIRLS?!?!?!"

she then bit you on the neck really hard with her fangs. From the shock, you stumbled back and you two fell down, with her still drinking your blood from your neck