Review Detail of Renruter in Shadow Slave

The story is really interesting. Good worldbuilding, at least for the "other" world. And interesting, clever MC. He is getting more and more power tho, and we're at volume 2 right now, so the OP-ness is really starting to show. He has some significant disadvantages too, so it's somewhat balanced. I really liked the first volume. However, the second volume started really slow, with a ton of flashbacks, and time skips. The story speed, and tempo dropped significantly, and now I have buyers remorse for paying for the chapters in the second volume. It feels like filler, to increase word count.