given that I'm playing fandom characters, idgaf if you draw anything. anything at all. just because you got the idea to smash Percy Jackson and Riku together from RP doesn't make it magically different or creepy compared to any other fanart - so go for it. draw whatever you want. have at it. it's fanart, there are no rules, get wild. yes that includes ships and smut. it's not my character, so I would feel like I'm the one getting overinvested if I feel weird about crosscanon fanart smut.

I'm just generally not into fanart, I don't even really seek it out, so if your CR partners are even somewhat disinterested, just don't push it on them. make it available and be cool about it and other people will probably be cool about whether or not they want to look at it.