Beneath the Surviving Princess Joyful FacadeBehind Her Highness' Smile; 살아남은 왕녀의 웃음 뒤에는; Saranameun Wangnyeoui Useum Dwieneun; Beneath the Surviving Princess' Joyful Façade; Behind the Laughter of the Surviving Princess; Ce qui se cache derrière son sourire; Detrás de la sonrisa de la reina superviviente; Pod uśmiechniętą fasadą ocalałej księżniczki; เบื้องหลังรอยยิ้มของเจ้าหญิง; 生き残った王女の笑顔の裏には; 幸存王女的微笑背后; 活下来的王女的笑容背后; 倖存王女的微笑之謎

"Very good. I shall give you my beloved sister, whom I cherish dearly." Eric Chladnie, who led the long war to victory against the Shidate Principality, received the mandate to marry a foolish princess as a reward for his triumph. After the wedding ceremony, Eric returned to the mansion with the newlywed princess. Amidst the princess's eccentric behavior, his father attempts to kill her and his mother advice not to give his heart. Only he, treating her like a child, respects and cherishes her as his wife. However, who is this woman who, in front of the king, impersonates deeds that she has never done and acts piously?