Harasaki was born in Fujisaki, Aomori on August 13, 1974. After graduating from high school, he joined Fujita Industries (later Bellmare Hiratsuka) in 1993. He debuted in 1995 and he played many matches as defensive midfielder. In 1999, he moved to newly promoted J2 League club, Omiya Ardija. He became a regular player there also as a defensive midfielder. In 2004, he moved to Vegalta Sendai. He retired at the end of the 2004 season.