Yusei Matsui was born on the last day of January in Saitama Prefecture, Japan. He has been drawing manga since he began elementary school. Some of his favorite manga series are Bobobo-bo Bo-bobo, JoJo's Bizarre Adventure, and Ultimate Muscle. Matsui learned his trade working as an assistant to manga artist Yoshio Sawai, creator of Bobobo-bo Bo-bobo. Matsui debuted his original manga Neuro: Supernatural Detective in 2005. His award-winning hit series Assassination Classroom ran in Weekly Shonen Jump from 2012 to 2016 and was adapted into games, tv shows, and movies.