The masturbation situation of a certain large family: The struggles of a sister who replaces her mother, written by Chinjao Musume. Ranked #1 in the 2021 FANZA doujin CG category! My kind and sexy sister is a sex worker for her older brothers!

[Sold in total 50,000! Chinjao Musume is a super popular doujin circle. ]A large family where the older sister, a female student, is in place of her mother. One night, the older sister couldn't see her younger brothers fighting over her sister's panties, so she used her as a sexy book. Since then, the younger brothers have started to treat her sister's body as a simple sexual disposable tool... and finally, she's even a virgin!? She's been approaching her and she's used her as masturbation material. My father discovered it, but the whole family started having sex... It's a sexy story from a slightly nostalgic era where I struggled with the masturbation material every night.