Ryūsui Seikūken is an advanced form of the original Seikūken. Instead of extending the radius of the Seikūken, it turns that principle inward, reducing it to a thin layer above the skin to dodge the opponent's attacks at the last possible second. This principle is necessary because dodging at the final moment before an attack hits saves time and energy. An absolutely calm mind is necessary to be able to use it, as even a slight degree of emotion will disrupt the technique. This move is described by Miu Fūrinji as the ultimate form of Sei. Ikki Takeda can also use the technique, but only up to the first level. Kensei Ma commented that, "It's shallow, but Ryūsui Seikūken has definitely been activated". This technique involves understanding one's opponent and feeling their rhythm. The user ma