Reverse Four Symbols Sealing

This technique is a fūinjutsu that the user places across their chest, and sets it to activate upon their death. It releases four symbols from the user's body that then forms a large, black sphere around them. Anything caught inside the sphere's area is then drawn in and sealed within the user's corpse.

Trivia

 * This technique has the opposite effect of the Four Symbols Seal, a technique which allows Naruto to draw out the Nine-Tailed Demon Fox's chakra from within himself.
 * The name and appearance of this technique are a reference to the Chinese "Four Symbols", known as "Si Xiang", which are produced from yin and yang, and act on the ba gua. These symbols are named: "lesser yin", "great yin", "lesser yang" and "great yang".
 * In Naruto Shippūden: Ultimate Ninja Storm Revolution, this is a one-hit KO technique in Danzō's awakened state if the opponent has no substitutions remaining.

Ura Shishou Fuuin Jutsu Jutsu de Sellado de los Cuatro Simbolos Invertidos