Sekigen Mutou (赤幻霧刀, Sekigen Mutou, Sword of the Scarlet Delusional Fog) is the Dark Household Vessel of Zaynab. This sword gives off a red mist that when people breathe it in it magnifies that person's hopes and uneasiness, causing hallucinations to occur. The mist, however, will not work on people with a firm will. This Dark Household Vessel gets its power from Cassim.