Kishin Taisen Gigantic Formula

The 2035 A.D. discovery of the twelve ancient stone statues, representing the heads of giant idols, allowed humanity to overcome the Equatorial Winter, a catastrophic event that threatened their existence. However, the statues' recovery also necessitated the creation of massive mecha suits, which humans were forced to inhabit and use to battle each other. This led to widespread conflict and a new era of human warfare.