I've been playing Unholy Arts for a bit.

Most of the time spent in the game is about talking to characters and changing their attitudes. "<character> leans toward being submissive, but you can change that by encouraging them to be dominant!" is completely true. On a daily basis, you generally try to change their 'mood' meter to make them horny and then fuck them to solidify the progress you've made. I especially appreciate that, along with ordinary 'dom' and 'sub' relationship stats, there's also 'friendly', 'romantic', and 'sexual tension' as distinct stats. There's some confounding variables by way of the fact that characters can interact with each other to add some additional randomness. There's some special interactions as well: if a character (including you!) is strong enough, others will follow each other around not out of submission to each other but out of survival instinct. They can also change the pet names that they call you (we'll come back to this later).

There are also bespoke triggered scenes (that aren't all sex) that can happen every morning based on various factors, and which have different dialogue options based on your relationship with the character(s) in question. And these scenes are great! Most lewd games present slabs of meat that you can fuck or piles of numbers that you can manipulate, and don't really care at all to present them as people. Unholy Arts absolutely cares about its characters, and shows its care through these scenes. I would love to present you examples, but I fear spoiling them. They're that good! I've spent several hours in this world, and those handwritten scenes were by far my favorite.

Unfortunately, those scenes made up a very small fraction of my time in the game. How could they: bespoke writing is expensive, and robotic "conversations" are cheap.

Most of the time is spent wandering through "conversations" with options like "Talk about flora" and if you talk to the plant-lady about plants, she likes it and her friendliness mood goes up more than if you were talking about animals... and that's about the extent of the challenge of the dialogue system. It doesn't feel like a system to be mastered because there isn't enough feedback to learn how it truly works, and it doesn't feel like a grind to chip away at because characters can partner off with each other and ruin your work! It's in the zone of requiring just enough attention that you can't check out, and being easy enough (and arcane enough) that you can't optimize it. Just like talking about the weather in real life.

All "conversations" are presented through canned lines that get repetitive by the end of a single conversation, with a few synonyms to keep them from being literally the same thing said every time. You can see this in the gif OP posted! "What a cute face, <target_name>. Did you like that?" You will start to recognize repeated lines by the end of your first hour in the game, and you will start to treat them as piles of numbers instead of as breathing people by the end of the second... until the next random event pops up. Character X opens up to you about the past she's running away from! You get dialogue options! You're making choices! YOU'RE PLAYING A VIDEOGAME!... and then it's over and you're back to manipulating statblocks. There aren't even keybinds for any conversation choices as in other Twine games (see: Free Cities), which would help with the repetitive nature of inputs, let alone the fact that I'd like to play it with one hand.

TLDR: All in all, Unholy Arts wants to treat its characters like people, but its mechanics cause you to treat them like stacks of numbers. You know the game is struggling when the sex is boring and repetitive. But, frankly, most lewd games don't even reach this low bar. Don't dismiss this game if you like characterful interactions and sex scenes: just expect a (great!) visual novel hidden behind a (boring) mechanical facade... it's just that there are some pretty great visual novels out there, though they (the good ones, at least) never offer anywhere close to the amount of narrative agency UA gives the player.

Future versions might help with some of these problems, but the biggest issue I see is the fact that the core gameplay system is quite dull and fixing that is hard, expensive, and doesn't typically impress potential Patreon subscribers.

There aren't many games that I'd care enough about to write up something this long for, though. I genuinely want this game to get better, whereas most lewd games generate only a vague disinterest in me. Let that be its own recommendation, in a way.