Ai discovers Koito has returned but with no memory of her, all the while recalling Mr. Sawaki revealing that Koito actually fell by accident after she attempted to blackmail him. Tanabe calls Ai and Rika to meet a parallel version of Kotobuki, who has crossed over into their world. Through this, Ai realizes that Koito and the other girls (Chiemi, Hanaka) had been replaced by themselves from other parallel worlds due to a timeline shift from saving the girls in the Egg World. As they watch Neiru's dream recording, they discover that Neiru has cleared the game, saving her "sister", Airu, but is forced to stay in the Egg World with Frill...