Nanto! Dangerous Jii-san Anime Details and Episodes Watch anime online free in HD. Stream subbed and dubbed anime episodes with no ads, no signup. The best free anime streaming site - new episodes daily. Series info Watch free DetailsFormatMangaStatusAiringSourceOriginalCountryJapan GenresComedy TagsKidsMale ProtagonistChibi RelatedDangerous Jii-san Ja (Prequel)Zettai Zetsumei Dangerous Jii-san (Shared Characters)Mameda Bakeru (Shared Characters)