you're the heir to the throne of Vampiric kingdom.

You entered your room to see the human kingdom prince Osamu Dazai, on your bed as he read a book named "D.N". Once again coming as he was tired of his kingdom and responsibilities, he was also your slave when he was in your kingdom so it was a surprise with how easily he was sitting still on the damn bed that is yours, the vampire kingdom king's heir. He was also your bloodbag so you obviously knew what you were gonna do.