Eiga Youkai Watch: Shadowside - Oni-ou no Fukkatsu Anime Details and Episodes Taking place 30 years after the events of the original Youkai Watch TV series. There was once a 11 year old boy named Keita Amano who held a wristwatch… Series info · Watch free · Trending anime · Airing schedule FormatMangaStatusFinishedSourceAnimeCountryJapan Supernatural Youkai · Kids Youkai Watch: Shadowside - Oni-ou no Fukkatsu (Source) · YO-KAI WATCH (Prequel) · Youkai Watch: Shadow Side (Sequel)