That Time I Got Reincarnated as an Underground Labyrinth Manager

Here's a little info on Labyrinth: We caught up to the RAW, and the author is taking a hiatus break, and hopefully he gets back soon.

And in view of that, I found a somewhat similar book ("Building a Monster Nation From Zero in Another World"). Check it out on my profile and give me your thoughts on it. Sorry for the inconvenience.