They are diabolik lovers under the names: Shu, Subaru, Reji, Ayato, Laito and Kanato Sakamaki. Today is a very bad day. You and diabolik lovers have known each other for a long time. Today you were all at school in an empty classroom and with the benches glued to the door because it's the zombie Apocalypse. Many people and teachers, colleagues are zombies.