Having learned the truth about This World, groups led by Ms. Aki and Hoshi prepare to go their separate ways. Nagara finds himself in an upside-down world he cannot freely leave, and is forced to work on building a Tower of Babel that reaches downward.
The way out? To the outside?
سبيل الخروج؟ العودة؟
Der Ausgang? Du meinst, nach draußen?
¿El camino de salida? ¿Al exterior?
Elle mène hors d’ici ?
Voltar? Lá para fora?