Ayu Okuma

17-year-old high school students struggle and grow up while facing the life and death of animals.

At a hot spring inn on a high school school trip, high school girls discover a bag full of money that a yakuza lover stole away. A hitman who appears to recover money, and a homeroom teacher who is begged by another student. A crime comedy set in a hot spring inn where multiple motives are entwined and chaos causes chaos.

YouTuber Tomoki Uchikawa, along with his friends Hinako, Souta, and Nanae, head to the former Ishio Village, where there are rumors of people being spirited away, to film a video investigating urban legends. However, their whereabouts remain unknown, and the police discover the rental car they had rented near a tunnel on the outskirts of the village. The video cameras left behind there show shocking images of locked houses, children in armed uniforms, imprisoned adults, and adults being infected by a strange disease, a rotten demon, that occurs on the night of a new moon.

Kiyoka Kuromi, a housekeeper with a hidden agenda, is determined to create the "ideal family" at any cost. Assigned to the seemingly perfect Haibara family, she quickly bonds with them, but her obsession drives her to take increasingly extreme and unethical actions in her pursuit of perfection.