Since Valve changed its stance on selling NSFW games a constant stream of them has been arriving on Steam. In December of 2020, 75 new games appeared in the sexual content category, not counting DLC or games that had clearly been tagged as a joke, like Halo Infinite. Some are part of an endless supply of hentai puzzle games. Others get filed under "visual novel," where anime-looking games end up by default.
Have a look at Steam's page for visual novels, sorted by concurrent users. The first result...