Dancing Blade Risk

One of the more rudimentary forms used by practicioners of Iaidō, although even a master of the art could make exceptional use of this technique. The user first enters a prepared stance, with their sword hand on the blade's handle, and their off-hand remaining close to the mouth of the scabbard. In a short, controlled burst, the user launches themselves towards the target and immediately strikes their opponent's waist, parallel to the user's sword hand.
It is a simple technique in practice, but given the skill of its user, it can turn its resulting attack from a shallow cut into a lethal wound.