Ep. 22: Chacha and Marin face an eight-headed hydra to retrieve a Graduation Stamp

22

Chacha and friends search for a Graduation Stamp in a wasteland, where thirst drives them to a village. The villagers request Chacha or Marin as a sacrifice to appease Oroshi, an eight-headed hydra damaging their lands. The sacrificial bier bears the stamp, prompting the group to accept the ritual to defeat the beast. Chacha and Marin are taken to the site, where Sorges rides one of the hydra's heads. Despite attempts to intoxicate the creature, Sorges intervenes. Marin escapes with the stamp while Chacha transforms to defeat Oroshi. The group returns the stamp to the school, unaware that a week of final exam studying remains before graduation.