Kawaki and Himawari participate in a training session in the forest near the academy. The class is split into three-person teams and Kawaki ends up on a different team from Kae. Anxious about losing sight of Kae, Kawaki is unable to focus and ends up burdening his assigned team. Kae is lured away by a mysterious person and disappears. Fearing that she is in danger, Kawaki and Himawari rush to find her.

After what appears to be an assassination attempt on Kae, Kawaki is cautious on the day of the school festival. The festival begins and everyone enjoys themselves. But when it's time for the play, a bomb suddenly goes off at the Academy.