Yusei Matsui is a Japanese manga artist. He was an assistant of Yoshio Sawai, the manga artist of Bobobo-bo Bo-bobo. Two of the manga he is known for creating are Assassination Classroom and Majin Tantei Nougami Neuro. Neuro: Supernatural Detective and Assassination Classroom were serialized in Weekly Shōnen Jump. Both were adapted into anime television series, and Assassination Classroom was adapted into two live-action films as well. His favorite manga series include Bobobo-bo Bo-bobo, JoJo's Bizarre Adventure, and Ultimate Muscle. In episode 25 of the Neuro anime, he has a cameo voice as a manga artist.