Steam can be nice for visibility and easy for a lot of users but their requirements for NSFW games can be a little iffy, I think the best approach for hosting NSFW games on steam with animated/stylish/cartoony art style is having the steam version as SFW version and give patch outside.
Sadly this approach is a lot of work and a lot of players don’t like it as you can’t point to the patch in the steam forums and players can’t benefit from steam auto-update feature with outside patch.
I don’t know about other stores that might accept your game (except DLSITE, but they require censership), but I hope things work out for you.