EKDV-658 My virginity was taken by my sister... For me, who just got a girlfriend for the first time, my kind-hearted sister Asuka Morise became my sex practice partner.

No way my sister is a sex practice partner! Bright and energetic Asuka and I are good brothers and sisters. Lately, every time Asuka finds out that she's a virgin, she's made a joke and gets a little harassed, but that kind of figure is also cute. I can afford it today! Because she made it! It was Asuka who was happy with me, but gradually my brother is okay? I started to worry, "Hey brother, haven't you ever had sex? Should Asuka teach you sex?"