Ep. 1: Kazuya and classmates form a club to investigate missing underwear and Amasogi activities

Kazuya Kagami dreams of a mysterious Amasogi and decides to address the issue at school. He teams up with Kiriha Obina and classmates from class 2-2, specifically Shirou Shiramine, Osamu Osanai, and Chisato Chikaishi, to establish a club. Their primary investigation focuses on the strange disappearance of girls' underwear within the school premises. As they delve into the mystery, they discover that another group of students is actively engaged in activities involving an Amasogi, complicating their efforts to resolve the situation and understand the supernatural phenomenon affecting the student body.

▶ Watch on Crunchyroll