Yusei Matsui was born on the last day of January in Saitama Prefecture, Japan. He has been drawing manga since 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. In 2005, Matsui debuted his original manga Neuro: Supernatural Detective in Weekly Shonen Jump. In 2007, Neuro was adapted into an anime. His next series, Assassination Classroom, captured imaginations worldwide and was adapted to anime, video games, and film. In 2021, The Elusive Samurai began serialization in Weekly Shonen Jump.