It was frustrating and I wanted to stop reading several times, but, in the end, I'm glad I finished it. All in all, I can't say I particularly liked any of the characters, except maybe Shina whose only problem was chuunibyou. Can't say I liked any of the stories, either. But I didn't dislike the manga at all. I suppose it was one of those stories that made me think "Ah the follies of youth!" Though I'm certainly glad none of my follies were as stupid as some of these!
I will forever hate Kitano; he's a manipulative asshole jackass. But, I hate Atsuko too- she's so in love with the idea of being in love, she lets herself be manipulated. But, as twisted as it is, you can still see there's some weird form of love (or maybe codependence? mutual wound licking?) there.
I think I would have liked to see a brief snapshot of their futures, or at least some proof that they became somewhat reasonable adults. Because at the rates they seem to be going, most of them are headed for destruction!
Heart O Uchinomese!