After retirement, Asano started coaching career at Shonan Bellmare in 2007. He moved to Avispa Fukuoka in 2010 and he became a manager as Yoshiyuki Shinoda successor in August 2011. However the club was relegated to J2 League and he resigned end of the season. In 2013, he signed with Nadeshiko League club Iga FC Kunoichi and managed until September 2014. In 2015, he signed with Japan Football League club Kagoshima United FC. In 2015 season, the club won 4th place and was promoted to J3 League. In 2017, he moved to J3 club AC Nagano Parceiro. He resigned in June 2018.