This series from the very begging is a huge cliche, so why are you guys complaining, the author did nothing new in any arc, the only thing that is a little different from the majority of harem mangas is that we love all the girl because they are all best girls.
This arc is dumb as fuck? yes, but i really don't think there should be much expectation for this story, just read have fun or don't, all mangas have that one arc that is crap if you think this manga doesn't have anything more for you just stop reading, i am nothing saying this to disrespect, i mean seriously, there is no reason for any of you to suffer reading something you don't like, but if you still want to read just pause you following for some time and return and to read later when the arc is complete and another is starting.