I got told by two different guys that they can't read shoujo romance because the male protagonists are way too cool and it makes them feel uncomfortable. I didn't understand them well before reading Ao Haru Ride. I think Kou is indeed the biggest issue of this series. It's not like I didn't like him, but he feels like a Prince Charming in His Teenage Years. So so so fake.
The extremely dragged out romance is another big issue (and, again, that's Kou's fault for the most part). I love UST but this is on another level. Whenever the characters were about to confess their love, something happened and they couldn't. If the mangaka kept it up a little more, she would have used an asteroid crash or something- that's how realistic those scenes looked to me. At one point I was just exhausted and felt like even a kick in the stomach would be better than reading this. And if you're wondering which point, well...
When they pulled the track-kun that almost killed Kou.
That's when I said "fuck it, I'm gonna throw this shit manga in the WC". But I was reading the digital edition so I had to give up.
I wish at least the sexual tension was well handled... but when it ends the manga ends too. Typical low-quality UST. And,
I was told they would have sex. Sounded legit to me, the protagonist was horny from like chapter 1, sniffing the guy and everything. BUT I WAS LIED TO. RIGHT IN THE KOKORO, I WAS LIED TO.
The "deep dialogues" felt as fake as everything else. They made my eyes roll several times. Nobody would ever say these things irl (I hope).
So... Why did I actually complete this? I'm sorry, people who think I have good taste. I actually liked it. In-between the moments I felt like punching the author (sorry Io Sakisaka, nothing personal), I liked it. The romance is cheap and stereotyped and I liked it. God please forgive me. But, this wasn't a complete failure of a manga. All the deep dialogues that made me roll my eyes where fundamentally (morally?) good. The author wanted to express something genuine and profound and I appreciated that. Counting on your friends and family, keeping hope for the feature, getting back up after falling down, having love and altruism in your heart, being true to yourself... I appreciated that. I think that year after year it's manga like this that help me believing in good things. So how can you not appreciate it? Even if it's already seen, stereotyped, unrealistic, whatever- I don't care, the message is good.
And lastly, I really loved that this was a manga about adolescence, and while the protagonists felt fabricated 9 out of 10 times, that 1 time left everything felt perfect. Some scenes (e.g. enthusiasm before a school trip, changing classes...) made me remember how I was when I was a teenager. I could empathise and go back to that time. Those parts were really good and I'm surprised an author who's not young anymore can make a manga that feels so young.
So, all in all, this manga has a lot of flaws but it also has merits, and it can be a nice read if you know you like this kind of stories and are not excessively annoyed by the dumb parts.