That one is a joint project with the guy behind Sword Maiden of Azure Dragon. (Tentacle3G)
Some the best quality RPGM games that feature Hardcore or Dark BDSM elements are made by a group of a Chinese creators that appear to have some kind of connection/relationship. Unfortunately, this also means they all share some kind of consumer-inconvenient monetization practice.
- you've got Wolf and Cursed Armor I & II, no need to add much here
- Tentacle3G with Sword Maiden of Azure Dragon, a lot of people praised the game, I gave it a try but did not have the patience to finish it. However I do appreciate the vast amount of content available. Sadly, still suffers from garbage overpriced DLC model and taking content hostage behind ridiculous Patreon goals. (although I think it's DLC spinoff content, unlike Wolf who incorporates a plotline into the game and then refuses to finish it until 3000 monthly Patreons)
- you got the Agnietta guy, honestly not much to criticise about this one except selecting Patreon as platform when they are fully aware of the nature of their content and then having to inconvenience the audience with "bending over backwards" maneuvers that just delayed the final product
- NewFace Evil Goddess this one uses a $1 per creation model. This means the current product is gonna cost you about $60, but then only $1 for future updates (at a rate of maybe one update per year), not to mention you need to wait for the planets to align because if you're lucky, you'll only have the opportunity to be charged once or twice per year and you are not getting the game until your payment is confirmed and up-to-date. Also features cancerous encryption that requires you to send a code to the creator so that he can send you your key back. Basically, in order to play the game via legitimate means you need to wait until the creator sets up a "charged post" that enables you to pay for that game in a limited 2-4 week time window. Then you need to wait for the current Patreon month to be over, wait a couple extra days for payment processing to be complete, then wait for creator to be online and manually send you link to Mega archive of the game. Then after you finish downloading copy the encryption code, send it back to creator, wait until creator is online again to send you your key.
To be fair, the game was pretty good for 2020, but it's starting to show its age nowadays, too many better projects came out, also Newface started removing some CGs from the game.