Xu Jiajia and Duan Xi have been bitter rivals for over a decade, yet once night falls, they tacitly maintain a casual sexual relationship. After a heated argument, their intimate encounter unexpectedly sends Xu Jiajia back in time to Duan Xi’s innocent youth. Seeing the young and naive Duan Xi, Xu Jiajia decides to first seduce her, then cast her aside, forcing her into complete submission! Possessing the soul of a 27-year-old, she faces the brooding, sensitive 20-year-old Duan Xi. What begins as revenge and teasing gradually reveals the other’s hidden vulnerability and pain…

(Source: Bilibili, translated)