Looking for a ballbusting story

There’s this one story I remember reading forever ago that was a brother/sister ballbusting story. The sister ballbusted the brother and seriously damaged his balls so he moved out and hated her for it and didn’t talk to her for years. Eventually he forgave her and met with her. Little strange I know but it was so good and I CANNOT find it anywhere. If anyone can find it or at least knows the story I’m talking about it would be such a big help. Thanks!!!