I love Isekai stories, and I came across this one drawn in by how interesting the premise was. I've read a ton of isekai before, and I love some of the darker ones when they're done well. Unfortunately, this one is the exact opposite of one that's done well.

Lets be real. There's nothing here other than a poorly-drawn monster slave harem. The attempts at being a darker series are completely overshadowed by the bad art, pitiful characters, and generic storyline. If you want something dark or even slightly satisfying to read, don't read this. All you'll find here is basic fanservice and scenes you've already read before.