Oushou Mutou

Oushou Mutou (黄侵霧刀 （オウショウムトウ）, Oushou Mutou, Sword of the Yellow Corrosive Fog) is the Dark Household Vessel of Hassan. When an object or person comes in contact with the blade of this weapon, it releases a yellow, acidic mist that will melt anything it touches. This Dark Household Vessel gets its power from Cassim.