Disclaimer: Digimon is not mine, nor will it ever be.
The sea and the sky were always there, always present. Always together, sometimes against each other and sometimes allied.
It started with AncientIrismon and AncientMermaimon, the two Ancient Queens of the Digial World. They were sisters, and yet, different as night and day.
AncientIrismon, the youngest of the two, was reckless and always wandered with Digimon who often followed her around. She never liked staying in one place too long, it made her feel tied down. Many Digimon who made their home in the air came to pay homage to her strength and beauty, she paid them no heed and often the pilgrims went home bitter from her indifference. AncientIrismon didn't notice their bitterness, in her ancient mind it didn't matter what a few mere commoners thought of her. She was the one who ruled over the skies with an ever changing mind. She was the Ancient One who thought elegance, keyed with power, in a warrior was key.
AncientMermaimon stayed alone in the Great Ocean, careful and wary of change. She preferred the solitary ways of a hermit and justly ruled her kingdom deep in the ocean. Digimon called her as beautiful as AncientIrismon, her sister, but the Queen of the Seas ignored the comments. Beauty didn't matter to her. Beauty would fade, she was recorded to have said often, but knowledge is passed on through the ages. So such was AncientMermaimon, the Ancient Digimon of Water.
Later, as history would tell, the two descendants of the Digimon would meet. Instead of quietly going their separate ways, like the two Ancient Digimon, they fought hard and bitterly against each other. Through several heated battles, AncientIrismon's descendant won. Though the details of her victory were never quite clear.
Bokomon put down his pen, looking proudly over the new section of his book on the Ancient Warriors. With a glare in the direction of Neemon, who had just knocked over a stack of books, he began to work once again.