If Nene and Kou want to return to their own world, they have to kill "Amane Yugi"and "Sousuke Mitsuba"-or rather, the versions of them living within the canvas ofNumber Four's boundary. Faced with that cruel choice, Nene instead proposes a wayto escape from this fake world to the boy she can't help but call "Hanako-kun." At thesame time, Kou tries to win over Mitsuba as well-but just who exactly is this"Mitsuba"?!