Grandoll Anime Details and Episodes "Grandoll" is a science fiction story whose theme is the invasion of Earth, featuring a boy's fight against aliens from outer space. As part of their plot… Series info Watch free DetailsFormatMangaStatusFinishedScore60/100SourceOriginalCountryJapan GenresSci-Fi TagsShounenMale ProtagonistAliensMartial Arts RelatedTezuka Osamu THE BEST (Related) RecommendationsMetamorphoseSF MixParasyteWonder 3