Akiha is rescued by Itsuki, but the student council ship is pursued by Nervalists and forced to take shelter in Kirkwood. The UURE, which has taken over the moon, is planning another attack. However, their plan is interrupted by Nerval, who appears and freezes the whole moon. On Earth, Honoka gets Fon to come with her by hitting him with a bowling pin and kidnapping him. Akiha can't come to grips with Imo-chan being gone, but she, Itsuki and the student council find a box human factory and meet up with one of the Shishido elders.
In the year 311 of the Orbital Calendar, humanity has migrated to countless colony clusters in space. A space colony girl named Akiha Shishidou encounters a malevolent artificial intelligence named Leopard that has been installed on a colony.
