A mysterious Half-Blood girl who has a past with Kimon no Kazu.
Out of all the Oniwabanshu, Kasumiouji is clearly the most violent one. She resembles her mentor in many ways, now more than ever after his change. Still, she views the other members of Oniwabanshu as friends... and that's the extent of her friendship. Anyone else trying to get close to her will more than often get completely ignored, or savagely chased away.
Players have yet to find out about them.