Losing My Virginity with My Little Sister! The Angelic Younger Sister Who Becomes Sex Practice Partner for Her Older Brother Who Just Got His First Girlfriend. Asuka Momose
Asuka and I are cheerful, lively siblings who get along well, always teasing each other. Lately, Asuka has found out I'm still a virgin and keeps using it as a joke. Then one day, I finally got a girlfriend, and Asuka celebrated with me. But soon she started worrying, saying, "Big brother, you've never had sex before, right? You'll be bad at it and she'll hate you." Before long, she made an unexpected offer: "Wait! Why don't I teach you how to have sex?" I was a bit shocked, but not wanting to be rejected by my girlfriend, I decided to entrust my body to Asuka...