Research

Nail felt incredible. Whenever he controlled his Ki for internal circulation training, he could clearly feel his proficiency with Ki improve and his control grow more precise with nearly every completed cycle. His body and Ki fused more tightly, and his physique grew tougher with each circulation. Nail came to love this method of self-improvement through circulation. With every cycle, he could see himself becoming stronger. In the end, Nail rapidly exhausted all his stamina.