- Parodies: Os tan hentai
- Categories: Doujinshi
- Tags: Os tan Hentai, Hiuma Hentai, Doujinshi Hentai, Big breasts Hentai, Anal Hentai, Otona star Hentai, Japanese Hentai, Hentai comics, Anime tits Hentai, Hentai games, Best hentai manga, Hentai porn comics
- Artists: Hiuma hentai
- Groups: Otona star hentai
- Languages: Japanese hentai
Hentai: Otona OS Happy Days
