Karen Anime Details and Episodes 1-2. Usu Kagami (薄鏡, The Thin Mirror); Comic Mujin 2000-09, 11 3-5. Karen (KAREN); Comic Mujin 2000-04, 05, 06 6. Practice Hard (Practice Hard); Comic… Series info · Watch free · Trending anime · Airing schedule FormatMangaStatusFinishedSourceOriginalCountryJapan Hentai Karen (Adaptation) Ryo Okawa · Dojima (Supporting) · Aki (Supporting) · Akigi (Supporting)