Shunsuke Kano, a young detective who has solved many difficult cases while still in his first year of junior high school. One day, he is asked to investigate an accident that has been thought to be unrelated. A popular masterpiece mystery novel comic version that includes 2 episodes: "Sereikai Jiken", the newly written title story in which Shunsuke tackles an unprecedented locked room murder case, and "Kinshijaku wa mou wa nai", which unravels a difficult case in the school!