I can understand why the mc has that kind of personality. Sometimes expectations from parents on their child too high that it will be a burden to their child. Especially even from the chapter 1, her parents have been comparing her to her sister which is hurt her feelings. As result she is finding a way to release her stresses and becoming useless is one way of her to react to those burdens. I hope this will be a sweet story for her though.
How come Pay for gay series always have the best plots?
Lesbianism and prostitution go well together? :P
My theory is that because yuri (as a narrative genre -- not talking about yuri porn here) has historically struggled with the topic of sexuality (probably because, as we all know, sexuality is an exclusively male phenomenon in Japan /s), stories that put sex work front and center clear that gap by default, letting the authors just tell their stories without going through the "required" motions of "but we are both girls!" and "how do two women even do it?" It's amazing how much creativity is freed up when you just adopt the basic framework that some women do have sex with other women and build on top of it.
That's really well-thought-out, and you're most likely absolutely right.
I'm lost like a needle in a haystack, I don't get the courses at all. :-[
Health course is the one where you go all the way and have sex, that much I got. But the others?
The one Scummy-chan had before was a Date course for 5000 yen, right? And with that course it's fine to have a naked bath together, hug and fondle breasts? Sounds like a lot already.