Yumika, standing at 170cm with long limbs that catch the eye, is a 29-year-old sports instructor. During her student days, she was fully dedicated to her club activities. Even after entering society, she threw herself into work, and before she knew it, she was on the verge of turning 30. Her husband, in his second year of marriage, uses busyness as an excuse to refuse sex every day. This is the first document of her infidelity, where she finally reaches her limit of endurance and releases her pent-up sexual desire.
