Ryūsui Ken

Ryūsui Ken (流水拳,Fist of Flowing Water) is the school of martial arts practiced by Souha Tamaki.

Overview
Ryūsui Ken is an extremely powerful style whose strength is its great versatility. The movements of the body have both a "rhythm" (律動, Ritsudō) and a "flow" (流れ, Nagare) and by comprehending the opponent's flow of energy, or rather understanding one's opponent and feeling their rhythm the art focus on stopping the flow and controlling the direction of power/force. In the same manner that water follows the contour of any surface on which it is flowing Ryūsui Ken focus on control, achieved through turning an opponent's own strength against them, rather than directly harming the opponent. The function of this art is explained as being like rain. All the rain drops hit a predetermined place, based on wind and such. The opponent is cornered as they congregate together to and flow, and the rising water eventually forms a great river that smashes into them.