Reverse Four Symbols Sealing

The Reverse Four Symbols Sealing Technique is a fūinjutsu and a stronger version of the Four Symbols Seal. The user places the seal 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