Well I think it was okay, a 6/10 I expected much more, it would be a 8 if I hadn't dropped and allowed myself to be disappointed by a lot of other Manga that I don't want to consider.
1) The harem was pointless padding when anyone would or should understand that nobody but the cover/first and title girl has any chance.
Too many girls that didn't need to fall in love with the MC, even the one with the boyfriends teased him, it felt too much like wish-fullfillment in a character in which I don't identify with.
2) The ecchi felt pointless, it needlessly called attention to itself when it had no intention to ever do anything interesting OR conclusive with it, I have seen more tasteful implied nudity in works that make less of a show than this one, (like 14 Sai no Koi and Level 1 demon lord to One Room hero) it upsets me because it calls attention to itself like a loud kid that thinks he deserver your attention for something important which then turns out to be nothing.
Either do something meaningful with it or simply don't have it, there are plenty of good romcoms that don't have it:
14 sai no koi,Seishun forget,Momose Akira no Hatsukoi Hatan-chuu,Mechanical marie,Houkago Kitaku Biyori,Tonari no Kurokawa-san,Sasaki-san wa Chotto dake Sugoi.
3) The last volume was one timeskip after the other, was the story getting axed? I can't imagine how things would have gone otherwise.
Age gaps seems like a way for the author to justify having a couple that can't be a couple, seems like lot of authors don't want to, or can't depict people being together.
4) The MC from chapter one to the end seems the same person, I can't really think of a way in which he meaningfully changed beside getting together with her at the end, he look the same person despite all the people with which he was involved......it was hard to tell a lot of the times when he feigned ignorance because of his position or if he just didn't understand something.
5) Their time together is nice, the MC is a nice person, but he lacks any real surprise to me, the story very quickly becomes apparent how is going to be just another one of those where things happen in the last 2 chapters.........it feels very by the numbers.
Would I recommend it? Well a lot of people are more ready to accept these stories than me, so yes, is certainly better than "Hajimete no Gal" and "Kuro Gal-san ga Kuru!" as far Gyaru romances go.