Watch Gekiman! Z & Great-hen Watch now on Miruro - Free Anime Streaming An autobiographical manga focusing on the creation of Great Mazinger. Series info · Watch free · Trending anime · Airing schedule FormatMangaStatusFinishedSourceOriginalCountryJapan Comedy · Mecha · Slice of Life Seinen · Drawing Mazinger Z (Related) · Great Mazinger (Related) · Gekiman! Cutie Honey-hen (Prequel) Tetsuya Tsurugi · Go Nagai