Story(7/10): The story has a good start introducing the main characters, showing how they met and the current state they are in. Later they introduce the different secondary characters, who are also given a story that explains in some way their way of being and how they interact with the protagonists. With 55 manga chapters, I think the story has a good pace of progress in general, except for the concluding arc, which deals with a love triangle that for some readers may seem somewhat forced, but I think it is understandable given that the author was possibly looking to finish the plot with a drama that would be resolved in order to make the reader go from a state of worry and nerves to a state of relief and happiness.
Art(7/10): Since it's one of the first manga I've read, I may not comment on everything you should know about the art of a manga. I think that the strengths of the author are reflected when drawing the facial expressions and the general anatomy of the body, I think they convey the feelings of the characters correctly. It may be a minor detail but I think the chosen outfit has a cool design and I think I'll be able to remember the characters' faces for a while. As for more technical aspects, I think that the positioning of the panels is adequate and the backgrounds are fine, nothing to particularly highlight.
Characters(8/10): Most of the characters have a decent level of development and a backstory that justifies why they are the way they are. Taking into account that the characters are students around 16 years old and in the situation they live in, I think they act in a way that is consistent with that and makes it possible for the reader to relate to one of them.
Kou was probably the character with the most depth and development due to the events he lived through when he was younger and even though he acted weird at times at the end of the manga I think he was a good character overall. Futaba also has a slight development throughout the plot but doesn't have as much depth as Kou, although I think it's admirable that she does not fit into any of the "dere" types.
The supporting cast is formed mainly by his close friends, which I would point out that some of them have an interesting story that at times is more plausible than the main relationship of the plot.
Enjoyment/Overall(8/10): Ao Haru Ride is a manga that I think other people will enjoy for all the points mentioned above, it is a relatively short manga for the genre that it is and possibly both lovers of romance and those who do not find it entertaining. I have had such a good time reading this manga that it is possible that in the distant future I will read it again. I recommend it!
