Ep. 15: Keita and Hinoki date after Kakuseijin fuel depletion while Miyako reveals Dr. Umezaki's connection to recent events.

15

With the Kakuseijin temporarily disabled due to fuel exhaustion, Keita asks Hinoki on a date, which she accepts despite lingering effects from Dr. Umezaki's pheromone flower. The Akamatsu Industries team survives the laboratory horrors and proceeds to a noodle house. During the train ride, Miyako Asami explains that Dr. Umezaki is linked to the man-eating worms, the hospital incident, and the Ajanta Caves. After eating, Keita and Hinoki visit caves that trigger memories of Hinoki's missing family. She then guides him to her former home in the woods. As Keita comforts her and attempts to advance their relationship, they are interrupted by a strange old man resembling the individual who gave Li-Chan a protective bell. Meanwhile, Betterman is occupied dealing with another hero, leaving Keita and Hinoki without assistance.