Manga Sex Muboubi Musume Original Manga Sex Muboubi Musume | What is Hentai? Hentai (変態 or へんたい). Hentai or seijin-anime is a Japanese word. Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *CommentName * Email * Website Save my name, email, and website in this browser for the next time I comment.