(Years after graduation, Kotegawa Yui had found her happiness—married to her first love, living a tranquil life. Having grown into a team leader in her thirties, she had something worth protecting. But a carefully crafted trap dismantled that peaceful life in a single night. Forced to bear responsibility for her subordinate's failure, she came face to face with the company president's son—a young man wearing a cold smile. In the deserted office after hours, pressed against the desk, she felt a man's hands on her body for the first time outside of marriage. The warmth seeping through her suit, fingers forcing their way in, a brazen caress exposing her smooth secret place. The moment she tried to form words of refusal, a young, fierce manhood slowly pushed open her narrow entrance and sank deep inside. The place once known only to her husband was filled with a different heat. The pain of shame and moral transgression unknowingly melted into a sweet numbness, and she could no longer even silence her own voice.
Her fall did not end that night. Wearing only nipple covers, a slender pet collar around her neck—on all fours in that humiliating pose, the young man gripped her hips without mercy and drew her close. Eyes that once shed tears now glazed over, glistening with pleasure. Each time her womb trembled from relentless thrusts, each time white essence warmly coated her inner walls, something quietly died inside her—her guilt toward her husband, her former pride. Months later, her husband lovingly strokes his wife's swelling belly with a happy smile. The brighter that smile shines, the deeper and darker the sweet secret carved within Kotegawa Yui continues to ache.)