The Kitsune Demon

Xua and Yua looked on at the two children that they had seen as their own for the past 9 months writhing in pain. Even after six hours, the pain didn't stop and Xua started to become more worried as time past. While Naruto had experienced pain before it was nothing compared to this, he saw through squinted eyes as his skin became clear smooth and unblemished as his muscles veins and organs broke down then rebuilt themselves to be stronger than before.

Hinata, on the other hand, didn't have the same pain tolerance as Naruto and her body was going through more changes. Similar to Naruto's time fusing with Kurama Hinata felt her tail bone extend as veins, and fur followed to create a tail with dark purple fur the same color as her hair. Her eyes also took on a shade of purple that was darker than the previous color but lighter than her tail or hair. Xua's and Yua's eyes widen as they saw the changes happen in front of their eyes, muscles became visible under her ivory skin which seemed to glow in the light spirit oil.

Even though her musculature became more apparent I didn't make her overly muscular but it showed the time and effort she put into building her strength. Yue curled up into a small ball standing out against her father's black fur as he leaned down to comfort her. Hinata and Naruto sat in the pool holding onto each other's arm for one day and one night before the final change took place. Their ears started to elongate becoming elven but only grew to four inches in length, soon after that, the pain started to fade leaving only a very fatigued Naruto and Hinata. Yua quickly lept into the oil to catch Naruto and Hinata on her back before she grew into the size of an elephant so they wouldn't fall off.

Back in the cave, Yua placed Naruto and Hinata down on the moss-covered floor as Yue trotted up to them and started to lick their faces as if to coax them out of their sleep. They stayed that way for two days recovering from their recent tribulation, the first one to awake was Naruto as he felt something pressing down on his right shoulder. Looking down Naruto saw Hinata tucked into his arm, not wanting to disturb her sleep Naruto sat back down and opened the notifications that were calling for his attention.

Ding!

[ Your blood as gone under a significant change, strengthening your bloodline. Also through some fortunes event, you have shared your race with someone else. Protect each other to ensure the future and safety of your race ]

[ Race has been changed to Royal Kitsune ]

Looking down Naruto saw Hinata short elven ears then followed down her body to see the tail growing from the small of her back. As if sensing his eyes on her Hinats slowly came to and turned scarlet when she realized that she was resting on Naruto shoulder. That thought was quickly replaced by the realization that she had a tail. Hinata sat there as looked at the waving appendage, the next thought that went through her head was that her chakra reserves felt absolutely massive compared to before. As she was thinking her hair got in her eyes, when she went to tuck it behind her ears she felt how long her new ears were.

She started to panic but when she realized that Naruto also had the same type of ears she calmed down. She worried that he wouldn't want her by his side if she looked different, even though she knew Naruto wasn't like that she sometimes feared that Naruto might leave her. " Naruto what happened, when you grabbed me I felt pain lance up my body. Then I wake up and I have a tail and my ears, I to understand how this happened "

Naruto was surprised at Hinata's words, " Somehow the nature energy mutated my blood and I guess when you touched me some of it must have leaked into you. I'm sorry to say that you are no longer Human you're a Royal kitsune as for what that means or a way to reverse it I don't have a clue. Again I'm truly sorry this is all my fault, I will take any punishment you deem fit "

Naruto looked Hinata in the eyes as he spoke as he waited for her to scream, or hit him possible both. Her figure blurred as Naruto braced for impact, instead of her palm slamming into his body he felt her hug him with her tail wrapping around his waist. He returned the embrace tail and all.