About halfway through the current chapters and so far this manga is overall a 4/10, I appreciate that the protagonist isn't the cringe isekai hero who faints when sex is mentioned but that's one of the few good parts about him as an MC. Otherwise the plot is very formulaic, the girls are neat although I wish there was a bit more post-victory domination than just "they get dicked down once and love the MC now." The action is decent and I liked the few fights. Unfortunately every match follows the same formula; the MC stands no chance until he suddenly reveals a loophole in the rules or skills that he uses to win instantly. Don't expect any lost fights or surprises. The plot is just an excuse for the hot harem girls but because this isn't hentai, it's mostly suggestive nudity. So it's like a mix of ecchi and hentai without the good parts of either, not enough sex but not enough of an interesting story either. Will probably skim through so I'm caught up with the latest chapter.