Twin Snakes Mutual Death Technique (Earth-2356)

This technique was taught to Jedi High Master Anko Mitarashi by Orochimaru. The user grabs one of their intended victim's hands and forces it to assist in performing the necessary hand seals, engulfing both into two massive snakes. Once this is done, the user and the victim die, which Orochimaru likenened to a lovers' double-suicide. When Anko used it on Orochimaru, she stabbed his hand to hers with her lightsaber to prevent him from escaping as she performed the hand seals. When she realisez he was merely a shadow clone, the technique was aborted.

Source

 * https://naruto.fandom.com/wiki/Twin_Snakes_Mutual_Death_Technique