Disclaimer: Gimli is a full OC, and so are the Archdragon of Day and the Archdragon of Night. Fire Emblem is owned by IS(IS). Much of the lore is speculation, because IS(IS) is full of weird and complicated bs. Please don't kid yourself. Not many can pull off a Soulsborne well, including me.
Note: If you need more info on the Archdragon AU, head on over to my profile.
1. Born of Destruction
"Night? Do you see what I see?"
Two dragons looked upon the ravaged ground, charred black by insanity and violence. There, lying on the ground, was a most terrifying creature seen by mortal eyes: sharp-looking claws; red, piercing eyes; two, small, white nubs jutting from the side of its head; curiously smooth scales; four feathered wings; a long, thin tail. A black gem-like stone laid in its clutches.
More importantly, it was a small and pitiful thing. It was lying on the ground in a fetal position, trembling, either due to coldness or fear, or more likely both. It whined quietly, desperately holding onto its stone, its small yet sharp claws scraping the ground in an attempt to make itself smaller, as if it could curl itself up and hide away from the world.
The two dragons looked at each other, concern lingering in each of their eyes. The first dragon had a huge bulking figure, its scales shining bright like gold, its wings pale and translucent, and looked more godly than many a Divine Dragon. Its stature mandated itself as a beast of protection and strength, and despite its fierce appearance, it exuded an aura of gentleness and peace, like rays of the morning sun.
The second dragon was much more lithe than the first, with a spindling body meant to twist and turn at the twitch of a muscle. Its scales were much more smooth, not ridged like its companion's, and they were dark in nature, like the deepest depths of the oceans. Its head was much more angled, sharper than the first, but it had kind eyes, and its wings looked like it had captured starlight in its black expanse.
The second dragon narrowed its eyes and leaned in closer and nudged the creature with its snout. "It looks like someone combined a Mage Dragon and a Divine Dragon together," it softly stated its observation. It sighed and closed its eyes, and a dark fog covered its entire body, eventually fading away. A female human with dark, long, flowing hair and dainty arms stood in its place. She knelt down and picked up the poor creature, small enough to fit in her arms.
"Night!" The first dragon cried out, worried.
"Day, it's alright. This poor baby must have been abandoned. Look, it's in the middle of nowhere, with nothing but death and destruction all around it… no, him." She nudged the stone closer to his clutches, and he suddenly transformed, right into a tiny human baby. She cooed and rocked the baby back and forth in her arms. "Look how cute he is! Why would anyone leave him all alone?"
The look in Day's eyes softened into love, and it knelt down before its most beloved and… "Should this be our new child? We have been wanting one for a very long time…"
Night smiled and nodded. "It's a splendid idea."
"What would it think of two mothers…?"
Night scoffed with mirth at her beloved's silly worry. "We never took issue on our own love. Should our parenting be the same? He needs someone to care and nurture him, and whoever his sire and mother are…" She looked sadly upon him, and gently ran her fingers through his thin, dark hair.
Day smiled and nodded to itself. "Of course."
"What should we name him?" Night asked, looking up and smiling warmly.
"How about… Gimli?"