My Husband's Friend Ryoko Murakami

Ryoko lived a happy life, not luxurious but loved by her husband and loving him in return. Her small pleasure was eating cake alone... Then one day, her husband Toru brings a friend home. The two are shocked when they greet each other and see each other's faces. That friend is Hanaoka, a man Ryoko once loved. Despite Hanaoka sleeping in the next room, Toru demands Ryoko. Ryoko reluctantly accepts, but through the slightly open sliding door, Hanaoka's gaze is fixed on them...