The protagonist, an international assassin who perished in flames and was reborn into the body of an eighteen-year-old girl who died from a heart attack. She retains her previous life skills as an assassin, including combat prowess, marksmanship, and battlefield emergency medical techniques. She is cold, calculating, and deadly in combat. Her objective is to complete 30 Trial Missions issued by a mysterious system in order to revive her brother Ye Wuchen, who was tortured and murdered by their former organization. She is described as exceptionally beautiful with jet-black hair to her waist and fair complexion. She is currently attending Fei Niao High School in Yancheng as the fiancée of the young master of the Shen family.
