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 · Trending anime · Airing schedule FormatMangaStatusAiringSourceOriginalCountryJapan Comedy Kids · Male Protagonist · Chibi Dangerous Jii-san Ja (Prequel) · Zettai Zetsumei Dangerous Jii-san (Shared Characters) · Mameda Bakeru (Shared Characters)