Hentai is a genre of artwork originating from Japan that typically depicts explicit adult content. As with any other genre, Hentai has its own wide array of category distinctions. Hentai categories can range from the standard fare such as ecchi and yaoi to more off-the-beaten path content like monster girls and sex robots. Hentai also includes various subgenres such as lolicon, harem, and futanari. Hentai fans are able to explore each of these categories to find the type of content they enjoy the most.