Disclaimer: I do not own Naruto or Percy Jackson

A/N: Ok I have decided to give the Percy Jackson world Chakra but only to children of the big three and really powerful demigods such as Annabeth or Clarisse. I have also decided to give Thalia the Yin half of Kurama as it would be an interesting twist to the story and there's a lot I can do with that and I'm sorry to the readers that didn't want it but I really like the idea and it got a lot of positive reviews and in the end it is my story. As I said the next few chapters will mainly be training and some important events that happened during this time. Also this is my first time writing a fight scene so it will probably be quick and shit, not very action packed. Also new format when characters are speaking tell me if it is better or worse than before.

Anyway on with the Story

It had been a couple of hours since Naruto and Thalia had set off for camp half blood. During this time Thalia had been glancing at Naruto while her head was swimming with questions all to do with Naruto. 'Why did Aphrodite call him the Champion and how powerful is he if he is above the level of a child of the big three.' Naruto on the other hand looked to be relaxed, but as he had been chased all his life and trained as a Shinobi he was always on guard. It had been very quiet since they left Los Angeles, it felt too quiet; but who was he to complain that they were not being attacked by mon- his thoughts were interrupted by multiple roars coming from behind him.

"God damn it." He swore as he turned around to see four large dog-like creatures with black fur and piercing red eyes.

"Hellhounds!" he heard Thalia say from behind him.

Thalia activated her bracelet and her spear and Naruto unsealed his ninjato, which felt a bit weird in his hand. Maybe he wasn't used to it or something. (A/N: Naruto will not be limited to the ninjato he will get other weapons) He got into a decent stance (in his opinion) and activated his Sharingan, as this was a new type of enemy he was not sure what to expect and would use any advantage he could get. Thalia couldn't see his eyes from where she was and he was thankful for that because if she saw his Sharingan it would only cause more questions. Risking a glance to Thalia, hoping she wouldn't see his eyes, he saw that she didn't seem to have any formal training with her weapons and decided that during the trip to camp they should train to learn how to wield their new weapons. Luckily for him Thalia didn't see him look back as she was too focused on the monsters in front of them.

"Got any advice?" the blonde asked his companion.

"Yeah, stay alive," was the reply he got. Sighing to himself, knowing that that was all he was going to get he waited for the Hellhounds to attack. The one that seemed to be the leader of the group launched itself at Naruto who saw it coming, with his Sharingan eyes moved to the side and plunged his sword into the monster, killing it. What he did not expect was for it to explode into a shower of golden dust. Thalia looked shocked that he had just killed the hellhound so easily. The hellhounds however looked angry - well, more angry than before- and two of them went to charge Naruto while the other went after Thalia.

Thalia raised her shield towards the monster and to her surprise the monster stopped in its charge and seemed to back away slightly. Taking her chances she raised her spear, charged and buried the spear in the monsters head and like the other hellhound it exploded into a shower of golden dust.

Naruto was now having a bit more trouble as he was facing two opponents. When he went to block the firsts' charge the other would charge from another direction. He was lucky that they hadn't got a hit on him yet; those claws looked deadly. His Sharingan was spinning rapidly as it tried to predict the movements of the two monsters. Just as he blocked another attack he turned to face the other only for his sword to be batted away and for him to be thrown back into a tree. "Naruto!" Thalia yelled seeing Naruto get hit into the tree. She charged at the hellhound that hit Naruto and blindsided it, stabbed in though its back and ran the spear through.

Naruto looked up towards the direction he previously was and saw Thalia looking at him. He saw a shocked look across her face and cursed knowing that she had seen his Sharingan. 'Damn it I wanted to wait awhile before having to answer those sorts of questions,' Naruto thought to himself angrily. But Naruto quickly noticed the lack of the final hellhound. 'Where's the last one?' Naruto thought as he looked around. He looked around the immediate area and couldn't see it anywhere. Sighing to him in frustration and resignation he looked towards Thalia again and saw her electric blue eyes looking back at him hundreds of questions forming in her head. Seeing the look on Thalia's face he deactivated his Sharingan and looked her in the eye.

"What do you want to know?" was all that he asked and Thalia jumped at the question not expecting him to be so blunt about it or for him to try and hide it and brush it off as nothing.

"What was up with your eyes?" she asked in shock having new seen anything like it before except in films. 'Of course that's her first question,' Naruto thought to himself.

"Where I come from my eyes would be classified as a dōjutsu," Holding up a hand to silence her question "dōjutsu means eye techniques, dōjutsu's are a pair of eyes with special techniques unique to them, my eyes are called the Sharingan or the copy wheel eye, they are the dōjutsu unique to the Uchiha clan, you with me so far," Receiving a nod in response he continued, "There are only two other dōjutsu that I know of and they are the Byakugan of the Hyūga clan and the Rinnegan and there is only one user of the Rinnegan and that is the Sage of Six paths Hagoromo Ōtsutsuki now know as the God of Shinobi. Now I won't go into these any more as it is a lot of information to take in. So any other questions for me?" He questioned her.

"Yeah why did Aphrodite can you Champion when we saw her?" Thalia asked.

"Before I meet you I was on Olympus, due to certain reasons I would rather not discuss at the moment, and I met Hagoromo he had come to the meeting due to the fact that I was his descendent because before he died and became a god he had two sons who formed the Senju and Uchiha clan of which I am a member of, well sort of but I'll discuss that at a different time, he wanted to meet me and see how powerful I had become while he didn't give a outright answer when he saw my power he did seem impressed by the look on his face. When Zeus' asked if anyone had anything else they wanted to do or say he stepped forwarded and asked for me to be his Champion as I am the only one that can use chakra effectively here while people do have it, it is such a small amount that without any training before there chakra coils set and stop growing they won't be able to do anything with it." (1)

Thalia looked stunned as anyone who is asked to be a Champion to a God had to be powerful so she knew it would be a good idea to stay with him and on his good side. She also made a small note to try and ask him about his past at a later date.

"So does this mean I would be able to use Chakra?" Thalia asked with a hint of excitement at the thought of getting Chakra.

"Hmm... Well in theory yes you can but I have a feeling I would have to ask Hagoromo how to do that and get his permission on teaching jutsu to people here." Naruto explained. Thalia looked slightly sadden that she may not be able to get chakra and slightly scared as she would have to mean Hagoromo in person.

"There is no need to ask me Naruto, I have seen everything that has happened today and I must say that you did well against those hellhounds." Hagoromo said as he stepped in to view of the two teens.

"Lord Hagoromo" the two teens almost yelled in shocked as they bowed in respect. They were surprised as they had not expected him just to show up.

"Please just Hagoromo when we are not on Olympus or with other Gods. Now I am here to help you with your problem if you are willing to help me with a problem of your own." Hagoromo explained the reason for his sudden appearance.

"Of course we would be willing to help. What is it you need us to do for you?" Naruto responded.

"Well Naruto it is a small problem that me and your father have been trying to deal with for years now. But before I continue does Thalia know about your connection with a certain fox?" The sage asked the young blonde. Naruto eyes widened it was the one thing he had not wished to reveal to Thalia after all the suffering it had caused him in the past. Naruto had just shaken his head in response to the sage's question.

"I see, Naruto you best tell her now as it will be revealed in future and if she doesn't know it could put her in more danger if something caused you to go on a rampage." Hagoromo explained to the blonde. Naruto just sighed and resigned himself to his fate. Naruto turned towards Thalia and started to explain,

"Thalia, when I was born a great beast attacked my village it was called the Kyūbi no Kitsune or the Nine Tailed Fox it was on a rampage but not of its free will thought it was being controlled by a man who called himself Madara Uchiha. My father the village's leader known as the Hokage was called Minato Namikaze but you would know him as Apollo had been with my mother that night as that was the day I was born. You see my mother was what you called a jinchūriki; a jinchūriki is someone who holds a tailed beast such as Kyūbi, when a woman that holds a tailed beast are giving birth the seal holding the beast weakens. Madara took advantage of that and extracted Kyūbi from her. My father fought the beast before sealing it into a new born child, me." Naruto finished in a whisper.

Many emotions ran across Thalia's face shock, anger and finally sadness Thalia had a terrible burden put upon his shoulders since his birth. Thalia's train of thought was broken when Hagoromo had spoken up,

"Now Thalia as you might realise Naruto is not the Kyūbi but is himself and is not a demon. Second what Naruto did not tell you is that jinchūriki such as Naruto do not have good lives if you want to know about Naruto's you will have to ask him yourself. Finally Naruto what you said was mostly true what you didn't know is that you only hold half the Kyūbi," Shock was plastered across their faces. "Now is what I wish to talk to you too about, My and Apollo have managed to keep it at bay till now but we need somewhere more permanent to put it we have tried to seal it into many objects but know of them worked, I am sorry to say this but we need a Jinchūriki and quickly we won't be able to hold it much longer. Thalia as much as I hate to put this burden upon anyone I want you to become it's jinchūriki, I have chosen you because you seem to understand the difference between the beast and the human it is sealed into, also you want to know more about chakra this will allow you to do this and also because your charka coils are not developed yet it will allow for you to adapt to have the Kyūbi sealed with in you. I see you have a pure heart and that you would not abuse this power. Thalia Grace would you be willing to become the jinchūriki of the Kyūbi's yin half?"

Thalia was once again shocked but she was also confused should she accept this it would help her understand Naruto more as well as use Chakra but would she be able to accept this burden and bear with pain it could bring her. Steeling her resolve she gave her answer,

"Yes I would be willing to become its Jinchūriki and be willing to share this responsibility with Naruto."

The Sage then turned to Naruto "and I trust you would be willing to train her in all aspects of being a ninja as well as controlling her Bijū." Hagoromo asked and Naruto nodded in response. Quickly grabbing Naruto's and Thalia's hands he flashed away.

Undisclosed Location

The group of three arrived in what looked to be the middle of a desert and the first thing they saw was a giant nine tailed fox attacking a main with spiky golden blonde hair.

"Apollo" the sage yelled at the man, "I will fight him from here you take care of the rest" Hagoromo finished right after he finished speaking there was two flashes and Apollo was with the teens while Hagoromo was fighting Kurama. Acting quickly Apollo started to prepare the sealing he told Thalia to lay down and lift her hoodie and top to expose her stomach, Thalia seemed to blush at this as Naruto was standing right there but complied anyway. Apollo quickly summoned a brush and some ink and quickly started to draw the seals,

"Now Thalia when the sealing is complete you will be out of it for a couple of days in order to adjust to the sealing do you understand?" Thalia just nodded, "good," Was Apollo's response before he quickly finished the seal.

"Hagoromo it's ready" The sun god yelled at the old sage. Hagoromo quickly flashed to his side as Apollo completed the seal "Hakke no Fūin Shiki, Fūin" Apollo said as he sealed the great beast inside Thalia, who soon because unconscious due to the sealing. Hagoromo quickly grabbed the teens and Teleported them back to where they were before.

Back in the Forest

When they arrive he turned to Naruto who had picked up Thalia and was setting her against a tree.

"I suggest you set up camp and stay here until see wakes. Make sure to have lots of food for when she wakes as she will be very hungry. In the mean till make sure to keep an eye on her and when she wakes I suggest staying a couple of extra days for her to adjust to her new chakra and teaching her a few chakra control exercises." Hagoromo said. Naruto took in all the information before nodding. Hagoromo just smiled before flashing away.

A/N: Ok this may not be my best work and a little on the short side but I decided there was a lot in the chapter to take in and that it had been such a long time since I updated I would end it here. Also I may not have given a lot of time for people to give their opinion on the Kyūbi chakra but I decided that the response was mostly good and it would be an interesting twist to the story. I am also sorry if any character is a bit OOC or if things seem a little rushed. Also about Hagoromo's personality compared to the portrayal in the manga would you rather he stay this was or that is was only putting up a mask and that he is still the small as manga and still wishes for peace in the ninja world?

For anyone complaining that I said that people didn't have chakra in this world I looked back and I saw that I said that no one could use it on Naruto's level so that meant that people had very little Chakra not that they didn't have any.

I hope you enjoyed the chapter and please favourite, follow and review, please review it makes me want to write more. Also if you see any mistakes please point them out for a better reading experience. Till next time Ja ne.