An Unvanquished Warrior.Momoe no longer wants anything to do with the Egg World, while Rika has become so blinded by revenge that she is banned from entering again. In her next egg venture, Ai is tasked to protect a version of herself from a parallel world, who had committed suicide by drowning. Parallel Ai's Wonder Killer is Mr. Sawaki, and he traps Ai in an illusion where Koito tempts her to jump from the school building. However, Ai, having come to terms with her feelings for Mr. Sawaki and her relationship with her mother, convinces Parallel Ai to admit her regrets and how much she values her mother...