Spidu has always had the best "casually cummed on" stuff. I think it was this set ( https://e-hentai.org/g/383341/f3819a687c/ ) series that I saw that really did it for me and made that fetish one of my favorites. Don't know what it is about it that I like. I don't like piss, so some of the stuff in this gallery is a miss for me, but I really wish there was a tag for that specific fetish: "casually cummed on". It's kind of niche and some might argue that "apparel bukkake" and/or "public use" covers that, but really, its more specific that and you really have to wade through a lot of...stuff with those tags to find something that scratchs that specific itch like the above link does.
It's like gokkun blended with apparel bukkake (or just bukkake), and also with public use, but not like abusive public use, it's more like "free use". I mean, I like the rape 'fantasy' tag, don't get me wrong, but I feel like there something distinct about "free use" over "public use". It's more casual, it's just part of everyday life and no one bat's an eye when you get cummed on. Public use is more restrictive and often comes in the form of some sort of "government mandate" to boost birth rate or something stupid (at least in Japanese stuff...). It's more like if nudism was normal rather than the being a frowned upon in many (most?) societies.