Acupuncture

Summary
Affecting the body through specific points. In traditional Chinese medicine, needles were used for this purpose. In fiction, knives, daggers, swords, fingers, etc. are also viable.

Possible Uses

 * Cause unbearable pain to the enemy
 * Paralyze the enemy (partially or completely)
 * Kill an enemy with one touch
 * Strengthen your own body (or your someone else's body)
 * Relieve fatigue (by yourself or with assistance from someone else)
 * Initiate or accelerate the healing of your body (or your someone else's body)

Users

 * Boruto Uzumaki (Naruto)