Hammer Hammer Anime Details and Episodes Sister and brother travel in search of a unpolluted land amidst the industrial waste of a poisoned world. Note: Originally published under the name Kei… Series info · Watch free · Trending anime · Airing schedule FormatOne shotStatusFinishedSourceOriginalCountryJapan Drama · Sci-Fi Female Protagonist · Post-Apocalyptic Ookubo Kei Tanpenshuu (Related)