After recovering their memories of Marie, Yu and the others are summoned to a parallel universe inside their mountain lodgings' TV, where Marie has secluded herself. It's a world where Marie's memories have turned into bizarre objects. According to Margaret, who has guided them there, this world will be closed off completely within several hours, and then they'll completely forget about Marie, which is what Marie herself wants. Unable to accept this, Yu and the others head further in to search for Marie. When they do find her, they see that she's completely changed. She declares herself to be their enemy who spied on the human world, and tries to reject them. But Yu raises his voice in anger. "Why did you leave without telling us?"

• Script：Jun Kumagai
• Storyboard：Shogo Komoto
• Episode Director：Masaya Sasaki
• Animation Director：Yae Ootsuka/Akiko Kumada/Shuuji Takahara/Emi Tezuka/Ryota Niino/Yoshiaki Matsuda