Minami, a school girl with big breasts who cares about her family but has a sweet idea.She goes to her lecturer to supplement her household finances, but her hands and feet are restrained and she is violently tortured with an electric massage machine.Even after that, she tries to seize the initiative by inviting men in a devilish way, but the reality is that she is not sweet.In the middle of an immediate blowjob to her father, the cock of a man who broke in is screwed into her mouth and deep throat.Minami, who has had sex with men she doesn't know, finds out that the mastermind who put herself in is her first compensated dating instructor, and carries out her revenge cowgirl reverse rap.