|Yin-Yang Release: Obsidian Purgatory|
|Rōmaji||In'yōton: Kokuyōseki no rengoku|
|Appears in||Anime, Manga, Movie|
|Classification||Ninjutsu, Fūinjutsu, Hiden|
|Range||Short to Mid range|
The user creates a barrier trapping the target then utilize the Buddha Pearls by imbuing them with Yin-Yang Release, once done then hurl them into the barrier with the target forcing the beads to grow and expand into a black mass that'll flood the target within the barrier till swallowing them whole and harden with the seal kanji "harden" to appear on it. The user can trigger the harden sphere to implode within itself killing the user but the shell will remain intact.