I've just read the last chapter scanlated (vol 9, ch 33) and I don't understand why some reviews say this is boring and/or frustrating. I think the plot is very much like slice-of-life genres. Very normal things repeat, but every time the plot moves forward (perhaps quite subtly). If that's not your thing, then I guess you'll find this manga boring. As for "frustrating", the story is how Haru & Shizuku develop their relationship, from being frustrated with one another, to learning how to communicate their feelings better and build a stronger, more secure relationship. I don't think the development is too slow (I'm the kind of person who easily drops series, but this one kept me interested), and it sure isn't unrealistically fast (that latter one, I might drop).
I think this manga is primarily driven by the combination of characters (and their development, and the development of their relationships). But I think it's very sweet that even though they might intimidate one another, the characters are all good people, and this is the optimistic story of how they try to get along. My favorite characters are the weird (but unbelievably good-looking) misfits Haru and Natsume XD It might be an overdone old trick, but I feel as if I'm the one falling in love with Haru. This applies for the artwork for all the characters, but especially with Haru, he's such a squishy, baby-faced, ridiculously hyper teenage boy (with a dark, violent, emotionally unstable side), that I find it impossible not to love him because of how the mangaka draws him.
Speaking of Haru's dark side, another point that makes this manga more than just a typical school life romance is how the subtle hints and short flashbacks related to the characters' older family members imply that something less than innocent from the adult world is hovering around the main characters' "simple" teenage lives the entire time. But I think that "darker side of life" emphasizes even more the beauty of youth, wasting time to have fun, and raising a pet chicken, lol.
Edit: I've finally finished reading the series! I think the ending feels a bit rushed and sort of anti-climactic. The story does explore a bit deeper psychologically into Haru & Shizuku's characters and background, and show how they grew together to build a relationship. But I think there are still a lot left that could be made into stories (and there are some things that were left unexplained, especially about their families). However, I'm not going to change my rating, because what WAS written is still wonderful and lovable 🙂