Doomsday: Sister's Rescue Plan

One day, the world changed. Sister: "Xiao Ye, I have already cheated on you. Come! Use all possible means to save your sister!" … When the doomsday comes, Hong Ye and Bai Ya make a contract and gain the ability to master weapons. From then on, he embarked on the road to save his sister. Note: This is not a serious doomsday novel. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.