The Seventh Day After Death, the Journey of Revenge and Redemption

I'm dead. My fiancé, who I treated with all my heart, and my best friend who I regarded as my sister teamed up to kill him. On the seventh day after my death, they stepped on my life, held a grand wedding, and accepted everyone's blessings. I turned into a dead soul, trapped next to them, and watched them enjoy everything I had. I hate, I complain, but I can't do anything. Until the wedding scene, the cold man sitting in the corner suddenly raised his eyes and looked at the transparent me. He said softly: "You're blocking me." I was stunned. In the whole world, only he can see me. Later he said: "I will help you get revenge, and you will accompany me to relieve loneliness." I thought it was just a transaction. But I don't know that he has been waiting for me his whole life.