One day, Nina, a dying girl who was being sold as a slave, was purchased by Clive, a somewhat suspicious man accompanied by a young child. The role Clive assigned to the frightened Nina was to be the caretaker of the young child, Tsumugi. Furthermore, Tsumugi possessed a mysterious power to heal any wound she touched...?! To protect Tsumugi, Nina begins living with Clive while "pretending to be a married couple," but their daily life, which started from that deception, gradually begins to change over time――.