Once the practitioner can see the Korui, he focuses all of his power while maintaining his center of balance and delivers a kick at the opponent's weak spot. The only major weakness of this technique is that the user has to focus all their power into their legs, forcing them to lower their arms and enter a guardless stance. An enemy could easily land a devastating attack towards their upper body, such as when Ethan broke one of Kenichi's arms. This is, however, useful since they can lure their opponent closer and use the attack at point blank range.