Brighter Than the Dawning Blue(2006)

Brighter Than the Dawning Blue is a science fiction series following Princess Feena Fam Earthlight, heir to the lunar Kingdom of Sphere. To prepare for her future reign, she's sent to Earth for a homestay with the family of the UN Secretary-General's chief aide. Centuries earlier, humans colonized the moon and established their own civilization, but a devastating conflict called the Oedipus War nearly destroyed both worlds. Now, the coastal city of Mitsurugasaki serves as the diplomatic hub between Earth and the lunar kingdom, home to the only UN spaceport connecting the two civilizations. Though the war has ended, fragile peace remains uncertain. As Feena navigates Earth culture and forms unexpected bonds, she must grapple with her royal duties and the lingering mistrust between her people and humanity.