The first image is a DeviantArt user request and was a following of "Demon Slayer femdom". He wanted to have a feet version and this ass sandwich version.
The second image is a variation I created while testing whether to offer variations or animations to Patrons in the "Early Access" tier. In the end, I chose the short animated version route, so there’s no point in keeping this test private.
The third image is an edited version that I'll post on DeviantArt. Since the animated feet version was removed there, I changed the submissive girl into a random Demon Slayer character to avoid the same outcome.