Ookiku Furikabutte - Sunshine House, Moonlight Home (Doujinshi)

A semi-AU story where Mihashi is a cat that was adopted by the Abe family. While Mihashi is grateful to Shun, who picked him up, he's fearful of Takaya, who is very rough. Yet slowly they come to be on good terms when they begin to understand that they both need each other.