My Daughter Was Killed, I Chose to Start the Apocalypse

An unknown virus broke out and Mondstadt turned into hell overnight. For the sake of their own interests, the Alliance of United States consolidated its ruling power, abandoned Mondstadt, built high walls, and deterred the world! Jiang Cheng obtained the system and faced the choice of becoming a hero or a devil. He chose righteousness and wanted to become a hero! But no one in the coalition believed him, and they shot and killed his daughter... Jiang Cheng regretted it... Since the world does not need heroes or light, then I will transform into a devil, completely pull the world into darkness, and bury my daughter with her!