Kaori feels a growing sense of unease about her daughter's boyfriend, Atsushi, yet still supports their marriage, clinging to the hope that she could live with him if they tie the knot. However, as she watches the couple's affection deepen, an uncontrollable jealousy begins to stir within her. Behind her daughter's back, Kaori starts building an intimate relationship with Atsushi. Torn between familial duty and her own desires, she becomes increasingly consumed by the urge to possess him, drawing them closer together. Ultimately, Kaori chooses the future she truly desires and resolves to take her relationship with Atsushi to a new level. Amidst tangled lust and emotion, her deepest feelings finally come to light.