The Family's Favorite Sister Thinks I'm Redundant, so I'll Leave

I am a billionaire heir who was "poorly raised", but my sister has everything I desire. Until I heard my parents' will - she got 100 billion and I got 5 million. I left the scene in silence, moved away to a foreign country, got married and had children, thinking that I would cut off the past. Until the night of the celebration party, my drunk sister grabbed me and said: "..." My wife discovered the chat history, and my mother fell silent looking at her "grandson" who looked exactly like me when I was a child. In this whirlpool in the name of "family", no one can leave with a clear conscience.