The Substitute Adopted Daughter is Finally Free!Kaedama Youjo wa Jiyuu ni Narimasu!; The Stand-in Daughter Wants to Be Free; 替え玉養女は自由になります！; 대역 양녀는 자유롭고 싶다

Nina Lindra is a gifted student and skilled magic user, but she has a secret that no one can find out. She often disguises herself as her adoptive sister, Lilia Lust, even taking her exams in her place, at the request of the Lust family. When the kingdoms queen requests Lilia to heal her ailing son, Nina once again steps into her role, using her powers to ease Prince Erlands pain. As Nina tends to him, she discovers the warmth hidden beneath Erlands icy facade. But as feelings grow and a charming foreign prince enters her life, Nina must face the hardest choice. Will she continue living a lie, or risk everything to be herself?