I Transmigrated into Grandmaster of Demonic Cultivation as Xiao Xingchen’s Younger Sister

An overworked office worker watched Grandmaster of Demonic Cultivation and The Untamed. When she saw Xiao Xingchen despair and take his own life, she cried so hard she could barely breathe, then suddenly died. When she woke up, she discovered she'd become Xiao Xingchen's younger sister. And since there was still time before those tragedies unfolded, she, who loved them dearly and knew the story by heart, was determined to give them a perfect ending this time.