Ep. 5: Akuto and friends navigate the underground labyrinth to uncover a hidden shrine and student council secrets.

Akuto, Korone, Hiroshi, and Eiko explore the school's underground labyrinth to locate a specific map spot. They defeat a cloaked entity attacking with bats and retrieve a plush recording device from a tombstone. This device leads them to an abandoned research facility where they encounter an armored statue. Eiko discovers a screen revealing an underground shrine behind a cave hot spring. Meanwhile, Junko, Kena, and Fujiko travel to the labyrinth. Junko, having fallen into the hot spring, reveals to Akuto that Eiko is a government spy. A wolf attacks them until Ken and Fujiko arrive. Witnessing Ken protect Junko, a tearful Eiko gives Akuto a shrine key and departs. Fujiko uses the key to transport them to the student council headquarters, which is actually the demon king's base. Greedy Fujiko employs the plush device to awaken the dragon beast Peter Hausen. The beast displays memories of Fujiko's brother's death, causing her to collapse. Akuto confronts Peter Hausen and becomes his master against the beast's wishes. The student council president kisses Akuto as a reward for finding the treasure first.

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