Absolutely scrumptious. If you have been following me for a while you should already know that I have a fixation on Tanuki Kasa, so that fucker will have all his holes obliterated once I pronounce the command, but the time is not there yet. Let me talk about youkai Kasa as a whole (like, the three in one).

One idea I really like for this prompt is Rui tricking youkai Tsukasa into making a deal with him to work for him. It would be the first time Tsukasa makes a contract with a human and even though he shows a tough face and attitude, he's really naive, and doesn't realize the way he has just sealed his future with darkness. The fine print is, that Rui's control over the human-looking youkai is practically unlimited, and with each thing he says, no matter if Tsukasa's mind disagrees, he'll have to do it. So it comes as no surprise to Rui that one time when they were alone in the woods at night, the turn of Tsukasa's usually confident a cocky expression into an horrified face as he realizes he can't move away when Rui decides to give him the "stay in place" command out of nowhere, which thanks to the contract, Tsukasa can't do anything but automatically obey in spite of himself, and that allows Rui to grope and fondle him all over, chuckling against Tsukasa's ear and biting his lobe asserting his dominance over the powerful spirit who had been his loyal companion until now.

"I thought youkais were smarter than this..." He mumbles as he strips the blond of his clothes and his dignity, and as much as Tsukasa screams and growls, he can't do anything to get out of the situation he's recklessly gotten himself into. Rui ends up fucking him against a tree, pounding him mercilessly from behind and enjoying how the youkai's screams turn into cries of shame and pleasure as he fills his pussy to the brim over and over.

If only our young youkaikasa had been a bit brighter...