After graduating from university he found employment at the Japanese National Police Agency. By defeating powerful judo athletes like Tamerlan Tmenov (Russia) at the 2003 World Judo Championships in Osaka, he became world champion in the +100 kg division at the age of 22. At the 2007 World Judo Championships in Rio de Janeiro he was victorious in the open division.
Following his graduation from university, he obtained employment with the Japanese National Police Agency. By defeating strong judo opponents like Tamerlan Tmenov (Russia) at the 2003 World Judo Championships in Osaka, he became a world champion in the +100 kg category at age 22. At the 2007 World Judo Championships in Rio de Janeiro, he triumphed in the open division.