Aventure 21 Anime Details and Episodes Remake of Tezuka's 1948 one shot ''The Mysterious Underground Man'' The parents of Isami Nishitani were killed aboard world's first stratospheric rocket… Series info · Watch free · Trending anime · Airing schedule FormatMangaStatusFinishedSourceOriginalCountryJapan Adventure · Sci-Fi Shounen · Animals · Male Protagonist Chiteikoku no Kaijin (Alternative) · Art of Yoh Yoshinari: Rough Sketches - Tezuka Characters (Shared Characters) Mimio