
Synopsis
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 the name of Toga... These two must now fight together with four other individuals aboard the super robot, Gravion to fend off the Zeravire threat.
(Source: Anime News Network)
Cast & voice actors

Mizuki Tachibana
MAIN
Voice: Yuu Asakawa

Klein Sandman
MAIN
Voice: Shou Hayami

Luna Gusuku
MAIN
Voice: Haruna Ikezawa

Leele
MAIN
Voice: Houko Kuwashima

Eina
MAIN
Voice: Mai Nakahara

Eiji Shigure
MAIN
Voice: Kenichi Suzumura

Toga Tenkuji
MAIN
Voice: Jun Fukuyama

Tesera
SUPPORTING
Voice: Ai Uchikawa

Marinia
SUPPORTING
Voice: Nana Mizuki

Brigitta
SUPPORTING
Voice: Rie Kugimiya

Tuile
SUPPORTING
Voice: Mikako Takahashi

Cécile
SUPPORTING
Voice: Akane Omae
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