Some students are saying that the Otonokizaka High school was something only in every night, as well as chairman. The students said something suspicious about the music room, and the others room. The others called it "The Mystery of Otonokizaka". The Chairman can't rely on the other students because their afraid about the rumors, the chairman found and rely the things to the school idol group called U's the popular idols. Each of them are investigating all the rooms in the Otonokizaka. They're going to find out the Mystery at the Otonokizaka but there's something happen while they are doing the mission which lead to them to someone's 'past' or 'old' world. Will they found out the Mystery of the Otonokizaka? And What will gonna happen to their school, mostly with them?
12 parts