- Born on 10/26/1976.
- In 1991, became 1p.
- In 1998, promoted to 6p.
- In 2002, advanced to 8p.
- In 1991, winner of 16th Kisei Tournament 1 Dan Division.
- In 1992, 17th Kisei Tournament 2 Dan Division.
- In 1993, 18th Kisei Tournament 3 Dan Division.
- In 1996, won the champion of 21st Shin-Jin-O.
- In 2000, won 9th Ryusei champion.
- In 2000 and 2002, won 15th and 17th NEC Shun-Ei Tournament champions.
- In 2002, 27th Shin-Jin-O second place.
- In 2003, 22nd NEC Tournament second place and challenger of 41st Judan title.
- In 2004, won the champion of 13th Ryusei.
- In 2005, won 60th Honinbo title.
- In 2006, successfully defended his Honinbo title, won 31st Meijin by defeating Cho U 4:2 and became 6th Meijin-Honinbo in Japanese history.
- In 2007, successfully defended his Honinbo title by defeating Yoda Norimoto 4:1.
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