I wholeheartedly don't understand the appeal of this. The art style is subpar at best, with it almost looking like it's sketched compared to the artist's other works. The inner monologue of haru is very annoying as well, it detracts from the scenes that the audience is supposed to feel any semblance of pity for haru. Additionally, we don't even see her trying to get a job before going into sex work, and she obviously signs up voluntarily at the beginning of the LN, so the people telling others she was forced to sign up are obviously lying.
The critique of isekais on treating women is even more BS. There aren't really any isekais(good ones at least) that have a patriarchal and sexist world. Although isekai harems can get annoying, there are like so many isekais that don't suffer from this and are 1000x better than JK Haru(reincarnating as a slime, overlord, konosuba, tanya the evil, etc).
Stop trying to laud this manga as a new way of treating isekais, the concept may be interesting but the overall execution is lacking. Please stop reading terrible isekais and actually enjoy some good manga for once. The only reason to even continue it is either you were a fan of the LN(the second 1/2 of the light novel is terrible btw fight me) or you just want to read a good jack-off manga, in that case I can help you redirect you to a wonderful website that can do that better than mangadex.
P.S The author is a MALE who writes +18 erotic novels for MALES, he was trying to write a novel to appeal to FEMALES, but I will eat my words if there are more female fans of this than male fans