Nakamura is a senior studying law in college while pursuing a professional career in mixed martial arts. He has competed in professional SHOOTO, GCM's DOG and Demolition, as well as the Ultimate Fighting Championship. He trains at the Wajitsu Keishukai network, also teaching there, as well as the Marupuro gym, and the Shinagawa Ranger boxing gym.
His last fight was a loss by split decision against Rob Emerson at UFC 81 on February 2, 2008 at the Mandalay Bay Events Center in Las Vegas, Nevada. After the fight, the 24-year-old Nakamura announced his retirement from MMA. Disappointed by his three UFC defeats, "K-Taro" also suffered from vision issues following the Emerson bout, due his opponent's toe impairing his vision after a high kick attempt.
Despite his claim that he would become a police officer, Nakamura's retirement lasted a mere three months.
Nakamura suffered a devastating loss to heavily underdog Korean fighter, Jang Yong Kim in his first post-retirement comeback fight.
|15-4-2||Loss||Jang Yong Kim||TKO (Punches)||GCM - Cage Force EX Eastern Bound||11/8/2008||1, 0:59||Tokyo, Japan|
|15-3-2||Win||Adriano Martins||Decision (Split)||Dream 6 - Middleweight Grand Prix 2008 Final||9/23/08||2, 5:00||Saitama, Japan|
|14-3-2||Loss||Rob Emerson||Decision (Split)||UFC 81: Breaking Point||2/2/2008||3, 5:00||Las Vegas, Nevada, USA|
|14-2-2||Win||Takefumi Hanai||TKO (Knees)||GCM - Cage Force EX Eastern Bound||11/11/2007||1, 1:59||Tokyo, Japan|
|13-2-2||Loss||Drew Fickett||Decision (Unanimous)||UFC Fight Night 9||4/5/2007||3, 5:00||Las Vegas, Nevada, USA|
|13-1-2||Loss||Brock Larson||Decision (Unanimous)||UFC Fight Night 7||12/13/2006||3, 5:00||San Diego, California, USA|
|13-0-2||Win||Djalili Salmanov||Submission (Rear Naked Choke)||GCM- D.O.G. 7||9/9/2006||1, 3:50||Tokyo, Japan|
|12-0-2||Win||Ronald Jhun||Submission (Rear Naked Choke)||PIP- East vs. West||7/21/2006||1, 3:55||Honolulu, Hawaii, USA|
|11-0-2||Win||Jun Yong Jae||Submission (Rear Naked Choke)||MARS-MARS World Grand Prix||4/29/2006||1, 1:58||Seoul, South Korea|
|10-0-2||Win||Yoshiyuki Yoshida||Technical Decision (Majority)||Shooto - 12/17 in Shinjuku FACE||12/17/2005||2, 4:06||Tokyo, Japan|
|9-0-2||Win||Katsuaki Niioka||Submission (rear naked choke)||Shooto 2005 - 11/6 in Korakuen Hall||11/06/2005||1, 2:10||Tokyo, Japan|
|8-0-2||Win||Mohamed Khacha||Submission (Rear Naked Choke)||GCM- D.O.G. 3||9/17/2005||1, 3:34||Tokyo, Japan|
|7-0-2||Win||Taro Minato||Submission (Rear Naked Choke)||GCM- Demolition 22||8/28/2005||1, 4:03||Tokyo, Japan|
|6-0-2||Win||Jun Kitagawa||Decicion (unanimous)||Shooto||6/3/2005||2, 5:00||Tokyo, Japan|
|5-0-2||Win||Kentaro Maeda||Decision (Unanimous)||Shooto||2/06/2005||2, 5:00||Tokyo, Japan|
|4-0-2||Win||Atsushi Inoue||Submission (rear naked choke)||GCM- Demolition 20||11/14/2004||1, 2:11||Tokyo, Japan|
|3-0-2||Draw||Kazunori Yokata||Draw||GCM- Demolition 18||9/19/2004||2, 5:00||Tokyo, Japan|
|3-0-1||Win||Keisuke Sakai||Submission (rear naked choke)||Shooto||7/16/2004||1, 2:20||Tokyo, Japan|
|2-0-1||Win||Ichiro Kanai||Decision (unanimous)||GCM- Demolition 15||5/21/2004||2, 5:00||Tokyo, Japan|
|1-0-1||Win||Daisuke Nakamura||Decision||GCM- Demolition 14||4/8/2004||2, 5:00||Tokyo, Japan|
|0-0-1||Draw||Ichiro Kanai||Draw||GCM- Demolition 12||12/27/2003||2, 5:00||Tokyo, Japan|