Melancholic themes, a tiny bit of intense drama, nice voice acting by both the cat and the girl (we can hear the thoughts of the cat even though he doesn't understand exactly what his owner says. This reinforces the connection between them nicely, showing that even without "speaking" the same language they have a much deeper, emotional connection). The visuals, while nothing spectacular, are on a pretty ok level, usually displaying a sunset that quickly becomes depressing.
All in all the anime is a very good drama worth your time...
EXCEPT:
Has any of you actually ever owned a cat?! Because the writer of this clearly hasn't. Let me tell you folks, I have owned both a cat and a dog in the past and this anime shows how a DOG would think, NOT a cat. Years spent together? Emotional connections? "I love her."?!?!?! Foolish naive humans, that's NOT how a cat thinks. A cat doesn't want to see you... A cat... A cat just wants to watch the world burn... I hate using memes as points of reference, but cats are a$$holes, we know it when we buy them and it's pretty much WHAT we buy them for.
In reality people, the moment you die horribly because someone threw the microwave in the bathtub, a dog would start crying next to your burnt corpse, and it would eventually die from the depression. A CAT ON THE OTHER HAND, oh... The cat would turn around on your revolving chair, rub its paws together and say: "The human is dead, good. All according to plan... Nyahahahaha!"
