My best Friend, Mao Mao

Chasta is a white female cat from the Sao family, the long time rivals of the Mao family. One day she happens to meet a little black cat around the same age as her with a desire to be a legendary hero, the two quickly become close friends and do almost everything together. But what happens when her supposed best friend starts avoiding her when they reach their teens. Read and find out.

(First story so sorry if it's not "perfect")