The year is now 2041 AD. A new enemy called Zeravire suddenly appears in the solar system, destroying all military installations it comes across. However, a wealthy man named Klein Sandman is already aware of this planned invasion and had been secretly preparing his army for battle. His trump card is Gravion, a giant robot that utilizes gravity as its source of energy. Meanwhile a young man named Eiji secretly enters Sandman's base in search for his missing sister. It is there that he meets another young man by…
Genres: Adventure, Comedy, Mecha, Sci-Fi
Watch Gravion episode 1 online — subbed and dubbed, with automatic AniList / MyAnimeList progress sync.
Aliens · War · Artificial Intelligence · Male Protagonist · Super Robot · Maids · Kuudere