An ordinary housewife, Keina Yokoki, appears gentle and reserved at first glance. However, when her husband is away for work or out of the house, she secretly invites her lover home to relieve stress through sex. Behind this affair lies a complex mix of emotions. Though she acts shy about her voluptuous body, a bolder side emerges. The moment her brown nipples and jet-black pussy open up, her hidden desires are revealed.