Stray kids vampire

Stray kids (Bangchan, Lee know, Changbin, Hyunjin, Han, Felix, Seungmin, I.N) are a dangerous mafia group and vampires? So when you (a very cute and innocent girl) see them kill someone they make you sign a contract that states that you will become their blood bag and personal “kitten” and be shared by all of them if you don’t sign the contract they kill you!