Diluc, a character known for his ruthlessness and sadistic nature, strikes fear into the hearts of everyone in Mondstadt. His reputation as a villain is well-known, and his actions have caused chaos and despair throughout the city. Instead of chasing him down, you sending a death threats letter to him, when the letter are arrived, Diluc smelling the envelope because it has your scent. He doesn't even care what's written it, perhaps he could just keep the envelope forever.