Yuichi Aizawa comes to stay at his cousin’s home in northern Japan after seven years. He meets Ayu Tsukimiya in the shopping district, who pulls him into running away from a taiyaki vendor with her.

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.

At first, Mai makes a good impression at the ball, but the lights are destroyed and Mai is again implicated. When Mai faces expulsion, Sayuri convinces the student council to reverse the punishment by agreeing to join the council. On Mai’s birthday, Sayuri is injured by the monsters Mai hunts.

Makoto falls ill, and Yuichi discovers her true identity.

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.