Reiko lived a quiet, ordinary life with her gentle and kind husband. But one day, everything changed when he called to say he was bringing a subordinate home, pulling her into an unexpected situation. Returning home in high spirits, her husband was accompanied by none other than Reiko's former lover. In that instant, Reiko's heart trembled. Unaware of his true identity at first, she could do nothing but allow him to stay, all the while concealing the emotions welling inside her. As her drunken husband slept nearby, the taboo thrill of committing adultery stirred her body, causing her to secrete slippery, aroused fluids. Her inner turmoil grew stronger each day, until she moved like a wild animal driven by instinct, her body irresistibly drawn to his. Their longing intensified, culminating in a rough, passionate union that forged a new, illicit bond between them.