- Parodies: Original hentai
- Categories: Doujinshi
- Tags: Original, Rico, Doujinshi, Lolicon, Sole female, Sole male, Glasses, Incest, Sister, Rico-ba, Translated, Chinese, Anime hentai, Read hentai manga, Hentai comics, Jav hentai, Hentai porn comics
- Artists: Rico
- Groups: Rico-ba
- Languages: Translated hentai, Chinese hentai
Hentai: Onii-chan to Sex Kenkyuu
