Ai's husband had to be hospitalized due to illness, so she went to take care of him. Because of his illness, her husband's ability to have a relationship was not good, which made Ai always feel disappointed. One day, Iida was hospitalized and was assigned a bed next to Ai's husband. He accidentally discovered Ai doing that with her husband, and then Ai witnessed Iida masturbating, putting her in a difficult situation. However, due to her strong sexual desire, she went to Iida's bed and secretly did that next to her husband...