Vampires

Tama and Yui have been staying at the Sakamaki's a house full of vampires! Tama often refers to herself in third person. She's Yui's little sister and wants to help her. Ever since they arrived they've been sucking Yui's blood. One day Tama sneaks into Yui's locker and meets Ayato. She gets him to suck her blood now all the brothers are interested in her more then Yui. Will Tama be able to withstand all this pain?