Ai's husband had to be hospitalized due to illness, so she went to take care of him. Due to his illness, their sexual relationship was not good, so Ai always felt disappointed. One day, Iida was admitted to the hospital and was arranged to be in the same hospital room as Ai's husband. He accidentally discovered Ai having sex with her husband, and then witnessed Iida masturbating, putting her in an awkward position. However, due to her strong sexual desire, she went to Iida's bedside and secretly engaged in the act right next to her husband...