In The Past (Prologue Part 1)

Allura was the princess of the Altean Moon Kingdom 1,000 years ago before the Galra invaded. Keith was the Earth Kingdom's prince. In the past, they were lovers. Now in Modern day, they'll meet again but is it still in their destiny to love again? (Voltron Legendary Defender Fanfiction, Sailor Moon AU. Crossposted from my AO3)