Negative Energy Cultivation Story

This is a story about "emotions". The protagonist is not a genius, not a loser who counterattacks, or pretending to be a pig to eat the tiger. He is an "emotional trash can" - an alien who can absorb other people's negative emotions and use them for his own purposes. In this world, emotions are energy, weapons, and poison. If you use it well, you can become a god; if you use it poorly, you will go crazy.