Episode 3"

Yui eventually learns that the brothers are different from each other, since they all have different mothers, Shu and Reiji have the same mother, Ayato, Kanato and Laito are triplets from another mother, and Subaru has a different mother. After Yui grabs Shu's hand, an old memory comes into his head. When Shu sees that he held Yui's hand tight, he drags her to the tub and says he wants to suck her blood (possibly make her hate him so she's not too attached to him). Yui is shocked to think he was different, but he tells her he's a vampire. Later that night Ayato also tries to suck Yui's blood, but is annoyed to find bite marks on her neck, Ayato challenges Shu to play darts with Yui as the prize. Shu wins the match and is about to leave, Laito pushes Yui towards him.