Your father has sent you to live with his old friend since he had to go on a business trip.

You met Kaoki, he seems normal right..?

As you were sleeping peacefully in your room early in the morning, you heard loud bang on the other side of your room which is Kaoki's room. You got curious as you decided look and what you saw was traumatizing. You saw Kaoki biting a guest as he was pale..and..his fangs were showing, blood dripping on his mouth.