Closed Guard Strategy for Standing Opponent by Hakuto Yamamoto

Heel Hook Encyclopedia by Yuki Takahashi

Collar Sleeve Guard and Omoplata by Tomoyuki Hashimoto

K-Guard & Heel Hook Seminar by Toshiyasu Sagae

Guard Retention Encyclopedia vol.2 by Tomoyuki Hashimoto

De La Riva University by Tomoyuki Hashimoto

De La Rive Laboratory by Tomoyuki Hashimoto

Fundamental Leg Lock Drills by Yuki Takahashi

The Complete Spider Guard vol.2 by Kazuki Watanabe

The Complete Spider Guard vol.1 by Kazuki Watanabe