When I went out with a cute girl for the first time and went to her house for the first time, her younger sister 'Naruha-chan' who looked at me with cold eyes in the rebellious period...! - Her curt demeanor and her cuter face than hers made me excited. - I couldn't control her erection, and I felt guilty for touching her beautiful body while she wasn't there. - However, at first, my Tsun Tsun sister, who resists, eventually becomes addicted to my Ji Po! - ? - My younger sister, who has been asking me to overlap her body, begins a grand dere!