佐渡ヶ嶽部屋
Kotochitose Kosei (born 22 April 1957 as Minoru Yamamoto) is a former sumo wrestler from Chitose, Hokkaidō, Japan. He made his professional debut in July 1971 and reached the top division in May 1981. His highest rank was "maegashira" 5. He retired from active competition in July 1986. He became a "wakaimonogashira" (assistant) at Sadogatake stable after his retirement.