At the request of her sexless younger sister and her husband, she somehow ends up serving as the sexual partner for her sister's husband... "Why did it even come to this...?" The older sister was bewildered. Yet, there was a reason why she had to accept her sister's request. Confused by her sister's unbelievable request, the sister gradually opens her heart and body to her brother-in-law, who truly needs her. Even though she knows it's wrong, she finds herself unable to resist the pleasure. Before she knows it, she has become completely obsessed...
Takara Eizou
