An immortal being takes on the form of a human boy, wandering the earth and experiencing the pains and joys of life throughout his story without end.
Genres: Action & Adventure , Animation , Sci-Fi & Fantasy
Keywords: adventure , anime , based-on-manga , emotions , eternal-life , eternity , evolution , fantasy-world , friendship , immortality , lost-relationship , memories , multiple-identities , mutation , philosophy , reincarnation , shounen , suffering , supernatural , survival , time-skip , tragedy , transformation , latest-episodes , watch-full-episodes-online , watch-anime-series-online