"Today and tomorrow let's do our very best to make this the best school festival possible." Itsuki has two lives: fightings against Darkers and high school. Preparing for the approaching school festival and the after party Rina's always wanted to hold has Itsuki exhausted. He does his best to avoid causing any trouble for his fellow student council members, but Rina realizes what he's doing. She asks Aika why Itsuki is so tired, but a series of conversations breeds only more misunderstandings. Itsuki is too busy to even resolve the misunderstanding, but he still does his best as the days pass. The day of the school festival, the Seiga Academy school festival begins with an announcement from student council president Rina. But in the darkness, unbeknownst to anyone.