Yuichi attends his first day at his new school, and later meets Shiori Misaka after another run-in with Ayu. The next day he finds Shiori visiting the schoolyard.

Mai resolves to end the fighting once and for all. As Mai and Yuichi fight the monsters together, Yuichi traces another fragment of his lost memory.

It is now spring, and Mai and Sayuri have graduated. Although Akiko is on the road to recovery, a rift still remains between Nayuki and Yuichi. On the day Yuichi is scheduled to leave and transfer to another school, Nayuki sees a familiar name tag at the hospital.