- A naïve younger sister who is quiet and has little experience in sex. - If you carefully develop your sister's nipples in various ways, you will be embarrassed to continue to with only the nipples! Sure enough, my sister, who couldn't stand it with just nipple orgasm, asked for nipple torture while inserting it into me! - My sister, who was embarrassed at first, gradually twists her hips greatly and explodes vulgarly with an ahegao face! - My sister, who was so naïve, ended up becoming a woman who asked for vaginal shot!