Demon Slayer: the Mysterious Masked Man at the Beginning

Mysterious masked man: "I am the ruler of this world..." Payne: "Huh! Now you understand the pain a little bit..." Itachi: "Your failure is my reality..." Wu Xin took the Hokage inheritance system and Fei Lu ghost destroyed the world. "Wumei, let's go out to drink wisteria tea and bask in the sun." I'm too lazy to write slowly, it's just cool writing This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.