Turn ∀ Gundam: Tsuki ni Mayu - Chi ni wa Kajitsu

For more than 2,000 years, there are people who have been waiting patiently to return to the earth. The people of the moon. When the Moonrace, led by the Dianna Counter, began executing their mission to return to Earth, Loran Cehack, who had descended from the Moon to Earth two years earlier, underwent a coming-of-age ceremony. That night, he encountered the Turn A Gundam.