Those Years of Escaping with the Imperial Princess in a Mecha

He was a scavenger orphan picking up parts from the mud, but he let the most dazzling star in the empire risk everything for him. In the academy, the nobles regarded him as an ant, but they didn't know that he had a blueprint in his mind to subvert the throne; on the battlefield, he held the fire of revolution and became the most feared "ember" of the decaying empire. When the ultimate mecha "Eternal Night God's Throne" awakens and swallows the consciousness of all people, only he can ascend the throne as a mortal and end the eternal imperial power. And the princess who once fled to the end of the world with him finally waited until he returned from across the galaxy and made a lifelong vow on the seaside.