Ring of Vengeance Anime Details and Episodes Katsuya just got something special that Hiroyuki cannot believe! Katsuya shows off a magical ring, and when he slips in on, his body takes on the shape of… Series info · Watch free · Trending anime · Airing schedule FormatMangaStatusFinishedSourceOriginalCountryJapan Hentai TSF no F no Hon (Related) · Yorinuki TSF no F no Hon (Related)