Since childhood, the younger sister has harbored forbidden feelings for her older sister, unable to confess the truth and suffering in silence. The elder sister, who had long ignored these emotions and kept her distance, gradually begins to recognize her younger sister's presence and the depth of her affection. Delving deeply into the theme of taboo sisterly love, this poignant love story portrays emotional conflict and personal growth. The bond between the sisters—and the intense emotional clash that follows—unfolds into a deeply moving narrative.