Sister duo appearance! First up is the cool beauty image of 'Yuko' the older sister. She's a bright and easy-to-talk-to woman, currently a piano teacher. She grew up in a strict and confining family environment with both parents being teachers. In her hometown, she had sex with four people and led an ordinary sex life, but after moving to Tokyo from Nagano to attend a music university and living alone, she experienced the liberation of not having to care about others' gazes. She met a man through a group date and started fucking him non-stop, now she's a lewd and promiscuous woman Uh... Please enjoy the sight of a sister's lewd behavior, climaxing wildly without knowing that her younger sister is aware of her performance. In the latter half, she reveals her true slutty nature while dressed as a CA.
