January 15, 1963
|Teacher(s)||Mas Oyama, Masatoshi Yamada|
|Rank||8th dan karate|
|Notable students||Ryū Narushima|
|Revised Romanization||Mun Janggyu|
Shokei Matsui (松井 章奎, Matsui Shokei (Akiyoshi), born January 15, 1963), also known by his Korean name of Moon Jang-gyu (Hangul: 문장규; Hanja: 文章圭), is a South Korean martial artist in Japan. He is the master of Kyokushin karate and current Kancho (Director) of the International Karate Organization Kyokushin-kaikan, only faction of the International Karate Organization (IKO) founded by Mas Oyama (1923–1994).
Matsui was born in 1963 and started training in Kyokushin karate at age 13. In 1976, he joined the Kita Nagare-Yama Dojo in Chiba Prefecture and attained the rank of 1st dan black belt in a little over one year.
Near the end of his life, some say that Oyama named Matsui (then ranked 5th dan, and clearly junior in rank to several senior instructors) to succeed him in leading the IKO. However this has been disputed with his family and Matsui. Reportedly, a letter by senior Kyokushin instructor Peter Chong noted that Matsui was surprised to hear that he had been appointed to succeed Oyama, but also that Oyama had earlier named Matsui before several other people as the leading candidate to succeed him. Matsui then became Kancho (Director). Following a dispute over the veracity of Oyama's will, Kyokushin karate as an organization divided into three main groups, led by Matsui, Kenji Midori, and Yoshikazu Matsushima.
Matsui is currently ranked 8th dan, and leads one of the IKO groups, supported by Yuzo Goda,Bijan Fard, Bobby Lowe, Peter Chong, and Seiji Isobe. Loek Hollander had previously supported Matsui, but withdrew his support in August 2010. Subsequently, Peter Chong parted ways with Matsui in 2018 and formed his own organization.
Matsui's tournament achievements include:
- 1980 — placed 4th in the 12th All Japan Open Karate Championships, when he was just 17
- 1981 — took 3rd place in the All Japan Open Karate Championships
- 1982 — took 3rd place in the same event
- 1983 — placed 8th place in the same event
- 1984 — placed 3rd in the 3rd World Open Karate Tournament
- 1985 — placed 1st in the same event
- 1986 — placed 1st in the same event and completed 100 man kumite
- 1987 — won the 4th World Open Karate Tournament, becoming the youngest champion ever
- Habersetzer, G., & Habersetzer, R. (2004): Encyclopédie technique, historique, biographique et culturelle des arts martiaux de l'Extrême-Orient (in French) (p. 455). Paris: Amphora. (ISBN 978-2-8518-0660-4)
- Singapore Oyama Karate-Do Kyokushinkaikan: Kancho Shokei Matsui Retrieved on 21 December 2009.
- Futoshi, K. (2005): 一撃の拳 松井章圭 (in Japanese) (p. 10). Tokyo: Kodansha. (ISBN 978-4-0621-2742-4)
- IKO Kyokushinkaikan: Kancho & Committee Members Retrieved on 21 December 2009.
- Shihan Collins: 100 men kumite Archived 2009-03-29 at the Wayback Machine Retrieved on 23 December 2009.
- Kyokushin Karate Canada: What has happened with the Kyokushin organization? Retrieved on 22 December 2009.
- Yussof, S. (2006): Flavours of Kyokushin: Mas Oyama's children Retrieved on 26 December 2009.
- European Kyokushin (17 August 2010). Retrieved on 18 August 2010.
- International Karate Organization Kyokushin-kaikan (in English)
- 国際空手道連盟極真会館 (in Japanese)