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Gravion

超重神グラヴィオン

In the year 2041 AD, a mysterious enemy known as the Zeravire emerges in the solar system, laying waste to all military forces in its path. Unbeknownst to the world, the eccentric billionaire Klein Sandman had foreseen this invasion and secretly prepared a defense. His ultimate weapon is Gravion, a giant super robot powered by gravity itself.

A young man named Eiji infiltrates Sandman's hidden base while searching for his missing sister. There, he encounters Toga and four other individuals who are destined to become Gravion's pilots. Thrust into a conflict beyond their understanding, these six must learn to unite and master the colossal machine to protect humanity from the relentless Zeravire threat.

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