Disclaimer: I do not in any way own Fire Emblem Fates, its characters or settings, only the plot. All rights go to Nintendo and Intelligent Systems.
In these stories, Kaden married Azura.
Corrin, Kaden and the rest of the army were walking through the Poacher's Forest to see Selkie. Kaden stated, "Can't wait to see my Selkie! Every time I go to her Deeprealm, my daughter is even more amazing!" Hayato, one of the spell casters in the army, asked "Is that so? And you say she's a kitsune too?" He replied, "Sure thing. Apple doesn't fall far from the tree either-her fur's just like mine. Now it's probably gotten even glossier than the last time I saw her! Hey! Don't get any funny ideas about Selkie. I'm warning you. Don't lay a finger on her. Or else. Which I mean in the worst way possible."
Hayato was nervous. It was for good reason. Several poachers hunted Kitsune, hoping to earn a quick buck from the black market for their fur. Kitsunes loved humans, but were a bit paranoid about them for this reason. Hayato continued, "You're kidding, right? I know people sometimes hunt our kind. But you do realise I'm a friend, don't you?"
Corrin found this to be a bit funny. He knew that Kaden wouldn't do any of that...unless Hayato really did hurt his daughter. They were suddenly interrupted by a hunter. "No, no, NO! Get me away from her! She's nuts!" Kaden sarcastically asked, "Need a hand? Oh, wait. You're probably not the sort that I should help." "Another one?!" "Another what - a kitsune, here in these woods? By any chance, you don't mean a kitsune girl, do you? Looks like me? Stunning fur? Twinkle in the eye?" "What?! Er, yeah. More or less."
Kaden sniffed the air. She smelled it. "Ah! I smell Selkie - and more of your kind near her. You intend to put your filthy paws on my daughter. I guess it's time I show you all just what I mean by OR ELSE."
After the battle, Corrin had a few regrets. He didn't like taking lives, even from those who deserve it. He made sure to take only lives that were necessary. He wondered if it was worth it, thought. Then Kaden came with his daughter. "Everyone, I'd like you all to meet Selkie." Corrin saw her. She had blonde hair with a little stripe with the same color as her mother's. She had fox ears and a bushy tail. She started hugging everyone. "Thanks for saving my skin! Literally. Although, I was hoping to have more fun with the poachers. Anyway, I want to return the favor by helping you in this war." Corrin smiled. She was her father's daughter.
Selkie walked up to Corrin. "You must be Corrin. Mommy told me all about you." Corrin remembered how Azura was her mother. They were close friends and could easily relate to each other. "I promise I'll return the favor for what you all did for me." Not only was she beautiful, she was also very kind...except to hunters.
He hoped she would be a good fit in the army.