At first glance, it seems to be a generic manga with a generic plot and a generic harem. Well I cant really argue with that but for some reason, it's pleasantly good to read !
The comedy was not that bad because all the girls were considering MC like a semi god because of his knowledge of the normal world. The main harem is not that bad either and not entirely that generic for a manga with that kind of synopsis and finally the story was pleasant. It was not something extravagant that keep you reading in one shot but it was enough to keep me reading it in 2/3 days until the end because i wanted to know what's gonna happen.
This manga is quite a surprise to be honest, it's not a masterpiece that deserves a 9 out of 10 but it's pleasant to read for some reasons so it's definitely worth the praise. I recomend to give it a try, you will quickly see if you can like it or not, the quality is constant so if the start fits you, the rest will probably too.