Kono Minikuku mo Utsukushii Sekai EP11 - Flowing with Time

Hikari tells Takeru that he's no different from the other monsters who've attacked her. Then she reminds Takeru of all his distressing memories of his mother leaving him. He freaks out, which appears to be her goal. Hikari decides to destroy the world. Akari freaks out and vows to stop her. This leads to Hikari and Takeru's predestined showdown, except that neither of them are trying to kill each other.