Vanitas
If you told Vanitas a week ago he'd be getting fed off by a vampire, he'd probably laugh at you and call you an idiot.
Except that exact thing is happening.
Akira, his best friend, was a vampire. Vampires need to eat, and he hadnt.
So, after a long day, the two returned to their shared apartment, where Vanitas had questioned Akira about his haggardness, where Akira slammed him to the bed.
So, here Vanitas is. Fangs in his neck, a hand over his mouth and his wrists above his head.