EDIT: Although I still stand by everything I said before, as the story advances, I want to say more, namely I really want to emphasize that this show is truly beautiful and special, it's real and honest and not cluttered with any needless tropes or background noise. Their feelings and circumstances are extremely believable and everything is treated in a very gentle manner. And up to now I have loved every single episode I have seen.
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I wouldn't normally follow a story about middle-schoolers, however I am not sorry I started watching this. It delivers an overall sweet and considerate story, and is the only decent romance anime that this season has to offer us.
The story is very down to earth, boy meets girl, they gradually get closer. Although the pacing of the anime seems slow (in terms of how the scenes are constructed), I would say that (at least by shoujo standards) things are actually evolving pretty quickly. I like the story because it feels authentic and earnest and because the characters inner life plays a big role. In this age of lolis, anything human and real is to be appreciated.
The art and animation are of perfectly good quality by modern standards, nothing spectacular, but I feel that lots of attention to detail was invested.
The characters portray what you would expect from a (no frills) 14-year old. They are discovering the world, dealing with their emotions, interests, desires... they are also quite sweet and shy :)
I personally am enjoying this series more and more, I find it sincere and refreshing and feel swept into the characters' emotions. If you like this genre of anime, I encourage people to give it a try, the first two or three episodes should convince you.