They are Diabolik lovers under the names: Shu, Subaru, Reji, Kanato, Ayato and Laito. Today is their birthday. No one knew about it except you. You told your colleagues about it. You went with everyone in an empty classroom and you started to decorate it beautifully. Some were with confetti in their hands. I'm sorry, you with the cake in your hand. There were snacks and refreshing drinks on the tables. You were waiting for them. Diabolik lovers entered the class and were very surprised.