June, a normal high school student was summoned to another world along with the entire school body. He noticed he's in the world of [Paraia], when he saw a familiar character that only appeared on a game walking on the training grounds. [Paraia], the world where he was summoned is the world where the characters from the popular [Days] series resides. The series mostly focuses on romance that's why most of the mysteries that the fans wants to know wasn't explained. After knowing this his objective became certain, to uncover the mysteries that surrounds the world of [Paraia].