Many of the characters are good, but the world built by the author makes everything sleazy.
It breaks it’s own rules so that the male lead can be surrounded by slave women, and murder anyone he doesn’t like.
It starts off saying super heroes/heroines are captured, beaten, and then sold. Except only one slave is a hero out of dozens. Never explaining why a super villian city is only selling super villains as slaves. Also, despite there being no gain for the villain to buy only women as slaves, he does exactly that. there is seriously no males as side characters at all, only minor inconveniences.
The main character says that his slaves are not for sex, but it feels like the author wished they could be. the whole thing plays out like a soft core fan fiction/anime hentai. If that’s what you want I’m not judging, but if you want a good story, keep walking.