Asano started to play rugby when he attended Hongō High School.
Later, he went to play for the Hosei University rugby union team until his graduation in 2002, when he joined NEC, where he would play for his entire club career until his retirement in 2014.
At international level, he debuted for a non-test Japan national team in 2002, although his first test cap would be on 5 June 2003, during a match against Australia A, at Hanazono, Osaka.
He was also part of the 2003 and 2007 Japan World Cup squads. His last international cap was on 20 September 2007, during a match against Wales, at the Millennium Stadium, Cardiff.
As of September 2012, Asano played 100 games in Top League. After his retirement, Asano became coach of the Kokugakuin High School.
Asano returned to NEC Green Rockets in 2019 to take over as the side's head coach.
JW Jan 2021
Career
 |
Japan Blindside Flanker |
2002 - 2007 |
 |
Green Rockets Tokatsu Head Coach |
