From SENGOKU official website.
SENGOKU announced the participation of Kazuhiro Nakamura to SENGOKU on Sep 28. Nakamura moves down to 83kg and participates in the middleweight tournament.
I have many reasons why I decided to fight in the 83kg weight class. I had fought in the 93kg weight class since I was in a junior high school. I was comfortable adjusting my weight to 93kg and had never had hard time dieting before my fights. I lost in the UFC and my experience in the UFC made me realized keenly that the difference of weights had great influence on the outcome of the fight, and I decided to fight in a lower weight class. I have no idea what I can do and what I cannot do in this weight class.