Because Matsuri Hino is being infuriatingly vague about the true parentage of those two (The motherfucker. Was an ending with no loose ends too much to ask?), I think it’s up to the readers to decide who, exactly, are their fathers.
So. Let’s talk.

If you talk about it physically, evidence suggest that Zero has the son and Kaname has the daughter. The guy looks like a spitting image of the vampire hunter, and the girl has the Kuran coloring - although from this vantage point it looks like the girl has Zero’s eyes (although it’s probably just the lighting).
But then you can argue that Zero fathered them both and the girl took Yuuki’s genes while the guy had Zero’s. Which, for obvious reasons, I am banking for.
I want a full brood of Zeki kids, dammit. Two isn’t enough, asdfghjkl.
But at the event that (I hope not) Kaname did fathered the girl, I can confidently say that the girl is still a Kiryuu.
Why? Let’s go back to this scene right here:

“This is a message from my mother to my other father.”
I’m saying that the girl is a Kiryuu because of the what she herself said. To my other father. She’s practically said that while Kaname was asleep, the girl had spent the last thousand years with another father.
Which is obviously none other than my favourite silver haired hunter.
This girl qualifies as a Kiryuu because, even though a different blood runs through her veins, she grew up with the fact that Zero have been taking care of her along with Yuuki and that their relationship is a close one because she called Zero her father.
I mean, if Zero didn’t treat her as if she was his own daughter, she would have said, “This is a message from my mother to my father”, right?
And I’m willing to bet that her last name is Kiryuu too. Let’s face it, the evidence that Yuuki and Zero were a married couple is that boy standing right there. Zero doesn’t strike me as the type of guy who does things half-assed and bangs a girl without marrying her first unlike some people I know.
WOULD HAVE YUUKI, SWEET CHARMING BEAUTIFUL FIERCE ROMANTIC YUUKI KURAN, LET ZERO INSIDE HER PANTS WITHOUT HIM PUTTING A RING ON HER FINGER FIRST?!
I though not.

“Though we’ve quarreled seriously many times… I’ve received a lot of happiness from Zero.”
JUST LOOK AT THOSE TWO. LOOK AT THEIR SMILES. UGH. THEY WOULD HAVE BEEN THE PERFECT PARENTS EVER. NO WONDER THE DAUGHTER TREATED ZERO AS HER OWN FATHER.
Sorry, my feels are still overflowing. Although it had some loose ends, I’m happy with the ending - the Zeki endgame contributing about my opinion too. Add up the Rukain ending, then my feels are BOOM.
PS. I WILL MISS YOU, MY FELLOW ZEKI SHIPPERS.
PPS. I don’t own the pictures. Credits to the owners!

砂瀑の我愛羅


-Zero!! How dare you!-She.. thinks she's threatening..?-Yuuki.. Kiryuu-kun didn't eat your pudding.I didI like to imagine this being a parallel to when Yuuki is pregnant, temperamental and hungry.
“Zero!” she huffed, hands slapping against her hips angrily. Her silver-haired Hunter glanced over his shoulder, continuing to saute the dinner cooking on the stove. He studied her silently — from her furrowed brows to her brilliantly annoyed tawny eyes, down to her lips which were set in a firm pout. If she wanted to be intimidating, she’d need to learn how to not look cute while trying.
“What did you do with my pudding?!” she demanded.
“I threw it out,” was his blunt reply, “you can’t possibly eat pudding with both ramen and icecream in it, Yuuki, you’ll make yourself sick.”
Tiny hands clenching into fists, the short woman hobbled towards him, rapidly beginning to take wild swings at her husband, all-along cursing him for tossing such a delicious gourmet snack.
She doesn’t get it, he decided with a sigh, holding her back with the hand that wasn’t currently occupied with their non-stomach-wrenching evening meal.
“Hey, are you even listening to me?! I was going to eat that!!!”
But that was the last thing he heard before her small foot landed — quite gracefully, I might add — in the center of his face.
It’s so canon. Everything is canon. Fanfiction and headcanons and everything. ♥
Kiryuus: the next generationI’m aware of the raging fanwank currently brewing over the older sister’s parentage. I’m just here to remind you that I refer to her as a Kiryuu and part of the Kiryuu family because that is what she is.
Zero was the only father figure present in her life for countless years, he was there for her through her angsty and superduper rebellious teenage years, he was there to pick her up when she tripped, he was there for her first love, and consequently her first heartbreak.
He was there.
She may or may not have Kiryuu blood in her veins, but Zero was her father.
The Kiryuus are her family.
She is a Kiryuu. Maybe not in blood, but definitely in name.
My work here is done. (◡‿◡✿)
Feel free to remove this section if you reblog. I just needed to get this off my chest