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 DetailsFormatMangaStatusFinishedSourceOriginalCountryJapan GenresAdventureSci-Fi TagsShounenAnimalsMale Protagonist RelatedChiteikoku no Kaijin (Alternative)Art of Yoh Yoshinari: Rough Sketches - Tezuka Characters (Shared Characters) CharactersMimio