DRMP-002 - I thought it was a housewives' club, but I got trapped by my husband's junior

Eiko, feeling neglected by her husband, attends a housewives' gathering at a friend's suggestion. Instead of her friend, she finds her husband's junior, Kobayashi, waiting for her. After drinking tea he offered, she passes out and wakes up tied to a bed. Kobayashi immediately begins teasing her with a vibrator, and before long, her confusion turns into uncontrollable pleasure as they give in to their desires.