As the castaways swim in a mysterious sinkhole, they seem to be momentarily taken back home. Cap invites Nagara to practice baseball with him, leading to him telling about the Monkey League, and how its star pitcher, Blue, missed out on a perfect game.

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.