Blue Elysium, a new fantasy marine resort, is holding its trial opening and Motoki wants the gang there. Kojo and Asagi end up working a yakisoba booth while Yukina and Nagisa see the sights. Elsewhere on the grounds, Sayaka rescues Yume Eguchi, a younger girl abductee but after giving the girl a photo of Kojo and sending her ahead to the lifeguard centre, is herself taken prisoner by a mysterious sword shaman

Kiriha Kisaki, who works for the Taishikyoku, an agency similar to and in competition with the Lion Kings, offers to release Sayaka once her mission is complete. Until then Sayaka will be put to work. Kojo discovers that Yume is a succubus demon, and her ostensible sister Riru is actually her own alter ego, concocted to cope with past trauma. The others all rise under her mischievous control and make advances upon Kojo.

While Asagi investigates, she is interrupted by Lydianne Didier, who reveals that she is working for the Taishikyoku, managing the LYL program and will protect their systems against all comers. She challenges Asagi to hacking combat and begins her attack. Lilith's spirit awakens early and automatically, contrary to Kazuomi's schemes.