@muhus, I know you are translating your post to English, but you are spoiling it with the large number of very basic mistakes.
In English, a male (a son or grandson) is HE-HIS and a female (daughter or granddaughter) is SHE-HER.
I've noticed translated stories from Africa and Asia often have this mistake. I wonder why.
Just getting that right will make your stories much more interesting/readable.
Is Fang a boy or a girl? In English it sounds as if you cannot decide