Gwihwanmagyogwan Anime Details and Episodes The world is destroyed by a demon invasion and Bigang Sa is forced to serve in the demon army for centuries. After a failed human uprising, Bigang… Series info Watch free DetailsFormatMangaStatusHiatusScore59/100SourceWeb novelCountryKorea GenresActionFantasy TagsFull ColorLong StripMale Protagonist RecommendationsMurimsega JeonsaengnaengkeoHwansaengmasinjeonBest Teacher BaekCheonma, Lich-iwangui Murimeul BusudaMyeolmanggeup Death Knight-ga Hoegwiham