Crimson Colosseum is pretty good if you have a slavery fetish, but Lilitales is still by far the best for it. Play that first and then try this one out.
Art: 8/10. Pretty good, but not amazing. The chibis and images are great, but a lot of the CGS are typical and therefore boring. Maybe 5–10 quality scenes, but hey that's what counts.
Story: 6/10. Which is really annoying because it was SO CLOSE to being 8/10. The main character, the setup, the worldbuilding... they all gesture towards something cohesive, but aren't. They rushed the ending because of time or burnout or something. Unlike Lilitales, we do not get scenes with our friends, which really sucks because I wanted to fuck the white haired girl more than any other character. We only get one, Leila, and that was one of my favorites.
Gameplay: 6/10. Too grindy and the combat animations were too slow. But it was still a fun idea. I personally just spent 1 playthrough training so my NG+ was overpowered.
This game was so close to being a Lilitales 2, but it doesn't reach it. Still, the pieces hold together and you get what you came for with the main story CGs. I'd recommend doing the NG+ exploit and sprinting to the end, listening to your friends' dialogue along the way. The complete gallery is worth it because it really doesn't take that long when you're overleveled.