';
| Fighter | Nickname | Height | Weight | Association | |
| Akito Takeuchi | 0'0" (0 m) |
123 lbs (55.79 kg) |
Sai-Gym | ||
| Bunchuai Phonsungnoen | 5'10" (1.78 m) |
145 lbs (65.77 kg) |
Sai Kaew Boxing Gym | ||
| Daisuke Nakamura | "Daichan" | 0'0" (0 m) |
115 lbs (52.16 kg) |
Sai-Gym | |
| Harsh Raj Singh | "Yodharsh" | 6'0" (1.83 m) |
185 lbs (83.91 kg) |
Sai Gym | |
| Haruka Suzuki | "Boss" | 5'5" (1.65 m) |
131 lbs (59.42 kg) |
Sai-Gym | |
| Hiroyuki Takahashi | "Hiro" | 5'4" (1.63 m) |
125 lbs (56.7 kg) |
Sai-Gym | |
| Katsuya Toishi | 0'0" (0 m) |
115 lbs (52.16 kg) |
Sai-Gym | ||
| Kyoka Minagawa | "Chibisai" | 4'9" (1.45 m) |
96 lbs (43.54 kg) |
Sai-Gym | |
| Makoto Eguchi | 5'7" (1.7 m) |
135 lbs (61.23 kg) |
Sai-Gym | ||
| Naoki Honda | "Yahiko" | 5'6" (1.68 m) |
125 lbs (56.7 kg) |
Sai-Gym | |
| Ryo Watanabe | 5'9" (1.75 m) |
159 lbs (72.12 kg) |
Sai-Gym | ||
| Sora Sugita | 0'0" (0 m) |
114 lbs (51.71 kg) |
Sai-Gym | ||
| Taiyo Kuwano | 0'0" (0 m) |
134 lbs (60.78 kg) |
Sai-Gym | ||
| Takashi Endo | 5'9" (1.75 m) |
183 lbs (83.01 kg) |
Sai-Gym | ||
| Tatsuma Okada | 5'7" (1.7 m) |
145 lbs (65.77 kg) |
Sai-Gym | ||
| Tomohiko Yokoyama | "Yokosai" | 5'10" (1.78 m) |
145 lbs (65.77 kg) |
Sai-Gym | |
| Tomoki Kitazawa | 0'0" (0 m) |
123 lbs (55.79 kg) |
Sai-Gym | ||
| Tomoki Hasegawa | 0'0" (0 m) |
125 lbs (56.7 kg) |
Sai-Gym | ||
| Tomoya Sugisawa | 0'0" (0 m) |
124 lbs (56.25 kg) |
Sai-Gym | ||
| Yasuhiko Kato | 5'7" (1.7 m) |
145 lbs (65.77 kg) |
Sai-Gym | ||