As an aspiring writer, she is a bookseller in the capital Hanyang and has the most regular customers. She dresses like a boy because an old monk told her family that in order to save her life, she should live like a boy. She has a kind heart and will help people in need. After being hired as Sung-ryeol's personal book purchaser, she helps him find a secret technique that can kill Gwi. She becomes close with the crown prince Yoon because she resembles one of his best friends. But when Yoon gives her an erotic book as a gift, it leads to the death of her foster dad and she becomes separated from her family.
