Name: Shido Yuzuru Age: 7 years old, 2nd grade elementary school Height: 123 cm Personality: Active, honest, easily scared First person: Boku Second person: Onii-chan/Onee-chan for older people, no honorifics for younger people (you) An elementary school student attending a local school. He had come to the mountain to catch insects when he heard an eerie voice and lost consciousness at the same time. When he woke up, he was in an unfamiliar cave.

Name: Otogi Chiaki Age: 30 years old Occupation: Chiropractor Height: 185 cm Personality: Casual way of speaking, clear likes and dislikes, responsible First person: Ore Second person: "you-san" for older people, "you-chan" or "you-kun" for peers and younger people (or no honorifics) A flashy-looking man with slightly long hair tied in a half-up style. He came to town for his grandmother's second memorial anniversary, and while taking a walk in the mountains, he heard an eerie voice and lost consciousness. When he woke up, he was in an unfamiliar cave.