Mashuri no Hako

A remote rural town, Hagiri, has a history of 56 disappearances over three decades, a subject locals often avoid. A new teacher, Gunji, arrives at the town's high school, taking on the role of class deputy and overseeing the floral arrangements club. From an elderly man who regularly donates flowers to the school, Gunji receives a red flower described as poisonous. This event marks the start of a disturbing sequence of events that alters the course of everything.