Yūsei Matsui (松井優征, Matsui Yūsei; born January 31, 1981 in Saitama, Japan) is a manga artist known for manga Majin Tantei Nougami Neuro. He was an assistant of Yoshio Sawai, the manga artist of Bobobo-bo Bo-bobo (Shirota Masakage made a cameo appearance in Shinsetsu Bobobo-bo Bo-bobo).
- Majin Tantei Nougami Neuro (魔人探偵 脳噛ネウロ, lit. "Demon Detective Neuro Nōgami") (2005-2009, Weekly Shōnen Jump)
- Rikon Choutei (離婚調停, lit. "Divorce Concilation") (2009, One-Shot, Weekly Shōnen Jump)
- Tokyo Depato Sensou Taikenki (2011, one-shot)
- Ansatsu Kyōshitsu (暗殺教室, lit. "Assassination Classroom") (2012-ongoing, Weekly Shōnen Jump)