Ane wa Gravure Idol

Takuya's older sister is Ran. She has a super erotic body, and she is a very popular gravure idol. He secretly uses her gravure photos for masturbation. But, he isn't satisfied with it. He just wanna shag with her! His sexual desire gradually gets bigger and bigger, and he finally rapes her. "It's your fault. You tempt me with such an erotic body!"