Cant wait for more Nariko content, I got into the femdom route for better or worse but I completely agree with your views, certainly dont need urination there for it to be proper femdom :D
And again, thank you for sticking to what you want to tell rather than making things more extreme for no reason other than a few people ask.
I think there is already enough "teasing" for bad stuff that it should satisfy people just looking for drama or for reasons to sympathise with the MC, going too far into that territory would definitely ruin the experience for me, so thanks and keep doing what you are doing.
As it is, its still mainly a love story with some fun and a lot of drama and thats perfectly fine.