My virginity was taken by my younger sister... To help me get a girlfriend for the first time, my gentle younger sister, a virgin, became my sex practice partner. (Momose Asuka, EKDV-658)

The inexperienced older brother is flustered about his date with his beloved girlfriend! Not wanting to be treated like a child, he consults his close sister, who surprisingly agrees to use him as a sex practice ground! The adorable, busty younger sister and her brother engage in incestuous sex practice!!