I'll quote myself from an earlier post.
Actually, now that I think about it, I might want to amend my previous quote. Outside of a few characters, I don't see every love interest couldn't have at least one scene which includes urination.
The bathroom scene from Day 2 was created during a time when I barely understood posing and MC's hand pose is awkward for not only story reasons. That was a major factor in why I avoided more urination stuff until after the washing scene gave me a better idea on how to handle liquid puddles, splashes, and skin effects. With both those experiences under my belt, I'm cooking up ideas for more watersports scenes in future updates which will consist of more than a handful of images.
As for what can happen in those scenes? The sky is the limit. Remember that the bathroom scene showed Ehrlynn's perspective, not MC's. The key wording of that whole scene was her desire to be pissed "in", not only on the outside nor did she specify "in" as her mouth. And we haven't even gotten to MC's feelings on the matter (hint: player will choose). I don't want to get too far ahead of myself, but if you looking for extensive urination content, it will eventually make its way into FD.
