Kamikubo's Secret Biting Pass/Shuya Kamikubo

Collar Sleeve Guard and Omoplata by Tomoyuki Hashimoto

Guard Retention Encyclopedia vol.1 by Tomoyuki Hashimoto

De La Riva University by Tomoyuki Hashimoto

Fundamental Leg Lock Drills by Yuki Takahashi

Wrestling Encyclopedia vol.1 ~Tackle, Stance, Off-balance~ by Kanae Yamada