Awakening to Seize the Body and Change the Skin System

Early foreshadowing + late cool writing + invincibility + villain + establishing an everlasting force. Take over various people, men, women or children, and experience all kinds of life... They are either royal sisters, lolita girls, e-sports girls, bookish academics, sports majors, nerds, etc. All are replaced, and the life and body belong to the protagonist. Take off their skin, cover it on your body, replace your identity, and walk on the long river of time, immortal. At the end of the long river of time, stands a silhouette with a blurry face...