Kawaki and Himawari's class want to perform a play about the legendary Sannin at the academy festival. Eiki wants to use the chance at the rehearsals to bring Kawaki's true goal to light.

Kae found out that Kawaki only befriended her because it was his mission to protect her. Kawaki, on the other hand, is to be pulled off the mission because he failed to report the assassin.