Ultimate: I, Xia Jie, Am the Strongest KO1 in History!

Xia Jie traveled through the ultimate world and awakened the god-level sign-in system. Through his own efforts and system rewards, Xia Jie became the new KO1 at the age of fifteen. Black Dragon once said bluntly: "Xia Jie is the most terrifyingly talented person I have ever seen." Daofeng also said: "Xia Jie is Dadong's brother, so I feel relieved." Jin Bike said in surprise: "I can't predict Xia Jie's past, present and future." Xia Jie's name will spread throughout the twelve time and space, and he will become the Lord of time and space! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.