, better known by his ring name , is a South Korean-Japanese retired professional wrestler who is best known for his longtime work in New Japan Pro-Wrestling (NJPW) as both a wrestler and a booker. He is considered one of Japan’s most influential wrestlers for his work in the 1980s and 1990s and is known as the first wrestler to popularize the Sasori-Gatame, better known in English as the Scorpion Deathlock or Sharpshooter. After leaving NJPW in 2002, he formed Fighting World of Japan Pro Wrestling (WJ), but eventually returned to New Japan in October 2005 as a site foreman, booker and part-time wrestler. Choshu once again left NJPW in 2010 and primarily worked in Tatsumi Fujinami’s Dradition, as well as his own self-produced Power Hall events as a freelancer. Choshu was a second generation Zainichi Korean until his naturalization in 2016. Early life Choshu was born Kwak Gwang-ung (), the youngest of four children in Tokuyama, Yamaguchi Prefecture to a Japanese mother and Korean father. His father left Korea's Chungcheongbuk-do for Japan in 1939 and worked as a garbage man for much of his life. Choshu has said that he faced discrimination from teachers in elementary school due to his Korean heritage. He took part in baseball and judo as a teenager and after training in the judo department at Giyang Junior High School, he moved to the wrestling department of Yamaguchi prefecture's Sakurakaoka High School as a special student. He eventually came in second place in the 73 kg class of the Nagasaki National Freestyle wrestling tournament, which attracted attention from university wrestling officials and he later enrolled at Senshu University School of Commerce on a wrestling scholarship. Amateur wrestling career Kwak joined the amateur wrestling team at Senshu University shortly after enrolling and was teammates with Mitsushi Hirasawa, the father of future NJPW wrestler Mitsuhide Hirasawa. In 1971, he won the All Japan Student Wrestling Championship in the 90 kg class. Thanks to his victory in the tournament, Kwak was selected to represent Japan in the 1972 Summer Olympics in Munich, Germany. Officials however refused to let him compete for Japan on account of him being part Korean. Nevertheless, South Korea instead invited him to join their freestyle team and he represented South Korea as a wrestler. Kwak ended the tournament with a record of 1 win and 2 losses, and was disqualified due to the penalty