When he was on the lower rungs of the first order ladder, his father took his skin to ensure he'd remain loyal and not return to the sea like his mother had. From what Hux has been able to find out over the years, his father sold it on the black market as pelts are incredibly rare. He got his son's undying loyalty and a handsome sum. Win-win.
Some time into the relationship, he tells Kylo, who is absolutely reviled. He makes it his personal mission to get it back, at all costs.
+ for bloody revenge
++ kylo knowing that when he gives it back hux may well return to the sea and never look back, but he does it anyway. he doesn't want hux to stay out of gratitude. even if losing hux would well and truly break him.
+++ hux telling kylo all the folklore and legends when they're huddled close in bed
sorry this is so long but it's been going round my head for DAYS
hux/kylo: hux is a selkie
Some time into the relationship, he tells Kylo, who is absolutely reviled. He makes it his personal mission to get it back, at all costs.
+ for bloody revenge
++ kylo knowing that when he gives it back hux may well return to the sea and never look back, but he does it anyway. he doesn't want hux to stay out of gratitude. even if losing hux would well and truly break him.
+++ hux telling kylo all the folklore and legends when they're huddled close in bed
sorry this is so long but it's been going round my head for DAYS