- Parodies: Original hentai
- Categories: Doujinshi
- Tags: Original Hentai, Doujinshi Hentai, Yaoi Hentai, Males only Hentai, Multi-work series Hentai, Beauty mark Hentai, Translated Hentai, Chinese Hentai, Hentai comics, Jav hentai, Hentai gif, Hentai games, Hentai porn comics
- Languages: Translated hentai, Chinese hentai
Hentai: Sensei no Kenkyuu Vol. 1
