Kore wa Koi no Hanashi

The male protagonist is a well known published author who is suffering through severe boredom in the midst of his success. He has decided to move into a house in the countryside in an attempt to overcome his melancholy but it isn't working. Then one day a young girl stops by and asks him to allow her to raise a kitten at his home. This young girl causes an unexpected reaction from him and he agrees. What is in store for him? Why does he react this way to this young girl? Why did he agree to let her hang around his house with this kitten?