Her Little Princess|| A Diabolik Lovers Story

Yui's spent a year and a half with the Sakamaki brothers now, a few months after Cordelia tried to take over her brother. She's learning more about the six brothers every day. However, Yui has her own little secret; she has an older sister, Aya, who happens to be a Vampire Hunter. And Aya is pissed that she couldn't see her little princess for over a year.