Imagine yourself in this situation: you wake up, and your right hand is gone. It's not only just gone, it has turned into a girl with the size of a doll!
But hey, now you don't have to fantasize about it! You can just watch this anime!
Okay now for real.
Story:
To be honest, after I read the synopsis the story didn't really appeal to me. However, after watching an episode I was fairly proven wrong and I just wanted to keep watching.
It's a good rom-com with a decent storyline and a decent background story.
The story is mainly focused on the two main characters and their behaviour towards each other and others. I felt that the story slowly built up tense each time I finished an episode, for the sake of working towards the ending.
For the ending you need to, of course, watch it yourself.
The storyline is very character-driven, but I will also mention this later.
Art & Sound:
These are not really the subjects I'm good at commenting on so please don't bother with my stupidity too much >.