Queen Millennia

In the year 1999, Amamori Hajime, a typical elementary school student, leads a carefree life filled with studies and playful moments with his spirited friends. However, his world is turned upside down when an experiment conducted by his father goes catastrophically wrong, resulting in a devastating explosion that claims their home and leaves Hajime orphaned. He is taken in by his uncle, an astronomer, and finds solace at the observatory where he encounters Yukino Yayoi, a girl he has admired from afar. To his delight, she serves as his uncle's assistant, offering a glimmer of hope amidst his new reality.

Yet, Yukino is not merely a helpful presence; she harbors a profound secret. Chosen by her home planet, LaMetal, she carries the heavy title of the Millennial Queen, tasked with preparing Earth for an impending cataclysm due to LaMetal's perilous orbit. As she grapples with her mission to save humanity by evacuating them to LaMetal, challenges arise from unexpected quarters, including a mysterious figure known as the head of the Millennial Thieves, who harbors his own motives to thwart her plans. In this intricate web of fate, the lines between friend and foe blur as Hajime becomes entwined in a cosmic struggle that may determine the survival of not only Earth but also the future of LaMetal itself.