If Nene and Kou want to return to their own world, they have to kill âAmane Yugiâ and âSousuke Mitsubaâ- or rather, the versions of them living within the canvas of No. 4âs boundary. Faced with that cruel choice, Nene instead proposes a way to escape from this fake world to the boy she canât help but call âHanako-kun.â At the same time, Kou tries to win over Mitsuba...but just who exactly is this âMitsubaâ?!