I wonder if I feel bored while living with my serious but indifferent husband.One day, her brother-in-law Tetsuo visits her house.Kana rejects the invitation of Tetsuo, who is a violent womanizer, but she is swept away by his relentless approach and has a relationship with her.Her caress, who knows the points different from her husband, Kana repeats the climax many times with a piston that goes deep into her vagina.She will be stunned by her first taste of pleasure.However, because of her guilt for betraying her husband, she continues to refuse Tetsuo's repeated invitations...