He is four times Asian champion and also won All-Japan Judo Championships in 1994 and 1997.

He is from Saitama Prefecture[1] and began judo at the age of a seventh grader.

[2] After graduation from Nihon University, He belonged to Sohgo Security Services.

He was long time before retiring itself from the high school days, a rival of Naoya Ogawa.

As of 2010, Konno coaches judo at his alma mater, Nihon University.