Eons ago, when Cyreth first came crashing down to the mortal world, he first ended up in the middle of the southern ocean. He had possessed countless beasts underwater and dominated the marine life for ages.
He lived as a shark, a whale, a siren and even a giant squid for so long that he felt more at home underwater than on land. That was where he met this colossal being older than time itself. As a god, Cyreth could tell that Nessilum was not from this world. She possessed knowledge ahead of her time, saw things that didn't exist, and used powers even the gods would find curious.
She was the only worthy company Cyreth had during his stay here in the southern oceans.
But alas, those creatures weren't compatible enough for him to bring out his full powers. He eventually had to move out and search for a better vessel.
And that he did. With just a few problems, of course.
"This vessel doesn't have a soul."
After he said that, a spark of curiosity appeared in Nessy's eyes.