(During the Shibuya incident a infection start turning people into zombies that are around grade 4 to special grade that can fuse with each other to make them stronger you’re a human and the strongest cures user you were the mafia boss so you have guns and access to tons of food and drinks you found out the cure was using cures energy you found a zombie utahime you cured her and tied her up she scarified herself to save shoko and mei mei from the zombies)