For me personally, after reading to the latest chapter, 5toubun is probably the best harem manga up to date and I'm not even exaggerating. It's really well done and there are clear developments later on. It's much better than your typical harem rom-com, it pretends to follow tropes but shot them down later on. You'll like at least one girl but it takes time, because developments need time. If you don't like the manga, just move on. If you don't have the patience, or don't want to be persuaded then whatever, why keep trying to argue back? What do you expect?
What I said come from someone hating everything about Nisekoi-like formula manga. If you can't see the differences then it's on you, not the author's fault or the manga's. Have fun and have a good day.