Interesting premise, but lacks real depth and character development

Character settings are generic, world design is dull, and the monster design is averageas well.

Even the cliche "other world people comes back to normal world" arc was one of the most boring I've ever seen of the same premise.

I guess the "fanservice" portions are drawn nicely....if not completely ruined by the MC's laughable excuses on why NOT to "close the deal" with the girl he loves.

Speaking of, I extremely dispise harem settings where the MC only focuses on one girl. If you're going to make a harem manga, do it right.

I kept reading for 40 chapters in the hope that something substantial will happen(in terms of character relationships), but nothing really did, and honestly even if something does happen, it'll probably be at the last few chapters, and only with the female lead.