Asano was born in Hokota on February 23, 1967. After graduating from Hokota Daiichi High School, he joined Toyota Shukyu-Dan in 1985. In 1987, he moved Japan Soccer League club Toyota Motors (later "Nagoya Grampus Eight") in 1987. In 1992, Japan Soccer League was folded and founded new league J1 League. In 1994, he moved to Urawa Reds on loan. In 1995, he returned and the club won 1995 and 1999 Emperor's Cup. Toward the end of his career, he played at FC Tokyo (2000) and Kawasaki Frontale (2001). He retired in 2001.