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.

Kossetsu reads the minds of others passing by in a train station world using her true power. She pines for Asakaze, knowing that he is interested in Nozomi, and that Nozomi is the only one who can change him. Asakaze is given a world-changing assignment.