Morishige was born in Hiroshima on May 21, 1987. After graduating from Hiroshima Minami High School, he joined J1 League club Oita Trinita in 2006. Although he original position was defensive midfielder, he played many matches as center back from 2007. Oita won the champions in the 2008 J.League Cup with young players, Shusaku Nishikawa, Hiroshi Kiyotake and Mu Kanazaki. However Oita was relegated to J2 League end of the 2009 season and Oita released their main players including Morishige due to their financial problems. In 2010, Morishige moved to FC Tokyo. Although he played many matches as center back, Tokyo was relegated to J2 end of the 2010 season. In 2011, Tokyo won the champions and was returned to J1 in a year. Tokyo also won the champions in the 2011 Emperor's Cup.