The Sweetest Substitute, Forever His Only One（DUBBED）

Rhea Roth spent her childhood in poverty after being switched at birth, and at nineteen she is finally taken back to the family that raised her real sister. Her new life starts with the sense that she never belonged in the household she was born into. The story follows her as she adjusts to this unfamiliar world while a romance with a man named in the title begins to shape her choices. Her cheerful spirit is tested by the gap between the life she lost and the one she now has to claim.