Also referred to as Su Yuyou, she is the female protagonist who suffered amnesia after a car accident. She is the daughter of the Su family. Her real parents are a police officer father and a researcher mother named Mu Yayou. She was raised by her uncle and aunt believing they were her real parents. She has a close relationship with Han Yuchen, her boyfriend, and gets along well with her cousin Su Ziyue. She recently visited an aquarium with Han Yuchen where she saw belugas, which triggered strange dreams about diving underwater and hearing a woman's voice calling her name.
