To the Hot Spring! The Mysterious Mountain's Miracle of Love - S1.E8

The girls win a day-trip to a resort in the mountains. On the way up the mountain, they stop at a shrine to eat lunch where a boy named Masazou Aoyamada yells at them for desecrating the shrine of Bacchigappa, the god of the mountain. The girls find a natural hot spring and stop to relax. There they learn that the resort is under construction and that their prize trip is for the following year. Masazou tries to stop the construction workers, claiming that the work has scared away the local otters and is destroying their habitat. Kish arrives and steals the boy's spirit to create a chimera anima. The Mew Mews defeat the monster and restore Masazou's spirit. The incident prompts the other villagers to join in Masazou's cause to oppose the construction.