I love to see variety, and queer positive adult games are a ridiculous rarity. Its sweet and I appreciate it, but the art is holding it back. As an illustrator, I'd like to give a couple of small tips:
1:line consistency, when different drawings have very different line art styles and thickness, it can feel a bit off. Take the 4th preview picture, where the character on the left has much thicker and bolder lines than the one on the right. I'd suggest picking a general thickness for outer lines, and one or two for detail work, and staying at least close to those.
2: While we're on the topic of lines, I like the direction you were going with the rough brush you used, there are too many samesy clean edge low effort cartoon style games out there without a distinct style, but it can be a bit jarring in places. Something that could help is coloring the lines, simply by adding an adjustment layer or mask. You could simply make them a darker shade of whatever color they're bordering.
3: proportions, yeah I can clearly see a don bluth/Atlantis fan here, and I do like it, but I do prefer the more realistic/naturalistic shots over some of the more highly stylized character shots. The bathtub shot for instance looks great, in large part because it feels so grounded and real.
4: rendering, having at least some level of shading makes a WORLD of difference, and you did a good job on the sexy time scenes, but for head on character shots you should always have some basic shading. I'd also suggest getting away from the airbrush style shading, and shade with colors to create warmer (or colder) shadows.
Overal, really happy this is here and hope you'll do another project!
