The protagonist, an 18-year-old orphan girl nicknamed Da Ya (Big Girl). She transmigrated from a post-apocalyptic world where she survived for ten years into the body of a girl in the 1970s. She possesses a dimensional space with supplies and a spiritual spring that came with her from the apocalypse. She is fierce, independent, and skilled at fighting. Her parents died two years ago after being fatally injured by a wild boar while hunting. She is cold and pragmatic about death due to her apocalypse experiences.