A little sister realized it was good to use her big brother to masturbate， and finally...？


This book summaries the stories of ’A little sister who tries to be sneaky about using her big brother to masturbate，’ which were originally posted on my support site between 2024 and 2025.
Please note that some parts of the contents are the same as those available on the support site.

This mainly includes four-frame and several pages of comics.
Please note that the image sizes may vary.

◇Contents
30 pages of one-page and four-frame of comics （including cover， etc.）
（Full color）