John Matthews didn't expect it, but no one would really. John totally did not expect to get a request from SHINIGAMI ITSELF to dive into the narutoverse with a recently revived Kushina Uzumaki, to raise Naruto Uzumaki to become the best person he can be! Watch as Korun Uzumaki (Formerly John Matthews) Travels through the narutoverse, changing things and altering the impending future!

Couldn't fit this into the summary, but I'm bringing over some weapons from other fandoms, AKA Darksiders and LOTR/The Hobbit.
Korun's Arsenal of Cold Steel:
Two-handed Greatsword.
Pair of Trenchhawks.
Pair of Kukri Knives.
Throwing knives based off Sword Breaker (unlimited).
Senbon Needles (Unlimited).
Bastard Sword.

Non-Cold Steel Weapons:
Anduril.
Sting.
Glamdring.
Ocrist.
Chaoseater.
Flying Thunder God Kunai(Unlimited).
Kekkei Genkai korun could use but were locked away by seals by a currently unknown person:
Hyouton (Ice release).
Mokuton (Wood Release).
Yoton (Lava Release).
Shoton (Crystal Release).
Kekkei Genkai from uzumaki blood:
Ability to be able to see any seals, and eventually be able to dispel or come up with a key for any seal.
Adamantine Chakra Chains.
Prologue:
It wasn't a normal day for John Matthews, not by a longshot. First was the deep demonic voice in his head, then his body constantly felt sore and weird, and then came the really weird parts for John.

[John]
John woke up, and felt strange. While his body was sore and weird, this feeling was just plain strange to John. So he sat up on the couch he passed out on last night after a hard day of working at the firehouse as a firefighter, John realized the area above his tailbone and the top of his head felt weird. Has my sight always been this good? John thought as he spotted something at the far end of the hallway on his left, but it was like he was just in front of it. Then John realized he could hear better, as he could hear the washer going from down the hall, and through a solid door and walls. So it has begun...I wonder what will happen. The demonic voice in John's head mused.
What the hell is going on? John asked. No answer. Damn it voice answer me! Still no answer. John sighed and then fell onto his knees, pain suddenly flashing through his body.
What the hell is happening? John thought through the pain as his palms hit the floor. John then felt fabric by his tailbone shift, and John turned his head to see a burnt orange fox tail with a black tip. "WHAT THE HELL!?" John shouted, suddenly shooting up as his pain was all but a memory now. John saw his clothes, and was awkward. His black t-shirt was stretched to the limit, as was his pair of blue jeans, but his black fingerless gloves with blank metal plates on the back of the hands, and his orange/black sneakers were perfectly normal. Then Korun realized it: his clothes were fitted to a normal body, and his had just been stripped of all fat and replaced with muscle.
Then John felt his hair shift, so his hands drifted to the top of his head, and everything checked out, his crimson semi-spiky shoulder-length hair was normal, and his extra set of ears were settling just fine-Wait, another set of ears?! John thought with alarm as he shot into the bathroom. Sure enough, there was a pair of rabbit-like ears on top of his head, burnt orange fur on the outside while the inside fur of the ears was colored black. John sighed as he sulked back into the living room and sat on the couch, making sure his tail didn't get hurt. This is going to be one HELL of a long day. was John's main thought. Oh you have no idea. The demonic voice agreed.

Okay, so I'm trying my best to make this readable, as one review told me that it wasn't really that readable because they were just big blocks of text, so I'm trying, that's the best I can do...this IS my first fanfiction I'm really working on after all... Ja ne!