Four Black Fogs Formation

A barrier ninjutsu technique performed by all of the Sound Four, used during the temporary "death" of those advancing their cursed seal to its second level. The seal confines them in a coffin while the process takes place, and does not even allow the Byakugan to see inside. The Dark Sealing Method can be used for an additional layer of protection. The seal seems to be naturally lifted once level two had been attained, with the tub exploding, but not harming the one within.