"Is righteous revenge a sin?" Fushimi Shika, possessed by the system, gave his answer: "Yes! But I will pay for all sins!" The avengers chanted his name, leaving his mark, and from then on, the world had a notorious serial killer. A father who lost his beloved daughter killed the real culprit; a husband seeking revenge for his wife committed a locked-room murder; a child who lost both parents made a desperate gamble... Fushimi Shika sheltered those who had lost everything, leaving behind his unique declaration at the scene: "This is divine punishment, and I am divine punishment"... Years later, atop a Tokyo tower, Minamoto Tamako pointed her gun at her partner. "Although I don't know how you did it, you are the one who started it all!" Thunder and lightning flashed, and torrential rain poured down. Fushimi Shika raised his hands: "How rude of you, Officer Rabbit, I am the messenger of justice."