At Sohoku High School, known for its excellence and idyllic atmosphere, the heroes of our story begin their journey in a new school life. But behind the bright facade, surprises, mysteries, and some of them not without comedy await them. From embarrassing situations on the first day of school to mysteries that have them chasing cats through the school hallways in search of "clues," their days turn into an adventure that combines laughter and suspense. Are these just ordinary challenges, or is Sohoku hiding secrets bigger than they seem?