Dark Release: Suffocating Haze, is high ranked, powerful Dark Release technique crated and commonly used by Shikyo Fushiawase against large groups of foes at the same exact time.
After activating the technique, a dark purple haze will surround the area. It'll enter the body of the targets any way possible--Chakra Points, pores, ears, eyes, nose, mouth, ect--and completely close up their air ways, causing them to suffocate to death. If Shikyo puts even more Cahkra into it then it'll turn black, and become even more deadly than before. Shikyo also has the ability to restrain it from entering anyone nearby who he wants to keep alive, even if it touches them.