See How I Return, Reborn

Wang Xiaosu died unexpectedly. Just as she was preparing to be reincarnated, she was told that there was something suspicious about her death. Yet she couldn't remember how she had died. A spirit guide gave her seven days to return and investigate the mystery of her death, but she unexpectedly ended up saving her high school classmate, Fang Tianhao. She also uncovered the secret behind her death...