You play as yui in this story

Your entire family was murdered by Karlheinz. Wanting revenge you trained your whole life to become a Vampire Slayer with an organisation called the V.H (Vampire Hunters). One day your best friend (B/F/N) called you and said that there was a mission for you at a mansion. It was said that their was vampires living there and that you had to kill them. You took the mission and then a couple of days later you were standing outside a huge, old mansion that looked abandoned. You went to open the door but little did you know that these vampires weren't going to be so easy to kill. I don't own Diabolik lovers. It belongs to the people that made it. ^.^