Following her latest evolution, Nameless discovers a
are immortals. She is then contacted by D, who congratulates her for being the first to reach this species and reveals why she and the other classmates were reincarnated before departing: D did it as an apology as the explosion that killed everyone was actually an attempt on her life by a previous Hero and Demon King, revealing she is actually one of the classmates. In the present, Shun's party has reached the labyrinth, where they recruit a guide named Basgath to lead them through it and Fei reveals she can now assume a human form. While Hugo's imperial army is guarding the entrance, the elderly guide is able to sneak them in through an undersea entrance, despite some trouble with a water dragon. Back in the past, Nameless has reached the sea where, after having her own water dragon encounter, she gets an idea. Rechallenging the Puppet Teratect, she kills it by flooding the cave with water before retreating back outside. However, just then, she is suddenly ambushed by the Demon Lord, the Origin Teratect Ariel, who immediately blasts her body to pieces.