Author Note/Disclaimer: Well this is a Naruto and Attack On Titan and slight something else fanfiction. Which I don't own. Where Naruto and his twin sister (Y/N) are somehow transported to the idiotic man eating titan world. That right you are apart of this story and as Naruto twin cool isn't it. Both of them will have unique abilities instead of the manga. Like having the chakra chains or having sensory abilities like Karin. Naruto will know the flying thunder god. I didn't forget the reader though. You have Karin abilities as well an apprentice of Tsunade. So it's kinda like you replace Sakura. (Sorry Sakura fans). But something I want to make clear I'll try to do romance and if you guys vote for more Naruto in the story except Sakura doesn't be afraid to ask. Sorry if some of the characters are vote for a pairing.

Pairings:

Naruto/Sasha

Naruto/Mikasa

(Y/N)/Eren

(Y/N)/Armin

(Y/N)/Jean

Naruto/Krista or Historia

Ymir/Krista

(Y/N)/Levi

Armin/Mina (I want to try this out I guess)

Comments are welcome. FYI I admit my grammar and spelling is shitty so anything wrong tells me :-)

-A few days before Eren and the others joined the 104th cadet training-

"Uggh.." A blonde hair man groaned when the sunlight showed in his eyes. Then pain shot through him but ignore it and sat up. Since he was always a trouble magnet. "Where am I," He told himself. Then it all came crashing in. Memories of The Fourth Shinobi War, Kurama, Obito, Madara, Kaygua, Sealing the rabbit goddess with the help of Sasuke his brother in but blood, Kakashi and his twin (Y/N). 'Wait were is (Y/N)' His eyes widen looking frantically for (Y/N). He saw blond hair from the corner of his eye. He looked toward his left. A struggle moan was heard. He crawled to his sister. "(Y/N)" He whispers. He finally made it to her by her side and grabbed her hand gingerly. Worry and fear showed on his face that his sister might be dead. Her face coated with dried blood. Rips on her black and gold Lotlia kimono with her forehead protector with the leaf symbol on her neck. Her white cloak and gold flames licked at the bottom and torn in various places. Scratches and large gash are shown but are healing rapidly. 'Must because of Kurama. Wait... Kurama can you hear me?' He thought. Grunt was heard from his mindscape. 'I'm right here gaki'. Kurama said. 'You know how much it nice to hear a voice that I know' he sighs out of happiness. 'Don't get sappy with me idiot. We're in an unknown enemy territory. Leave me alone so I could focus on (Y/N)' He said in an irritated voice. He felt his presence leaving. He shook his head and pay attention to his sister. Pieces of her body were healing and putting her bones in place.

He moved pieces of her hair on her face behind her ear. Sadness, sorrow, and regret was swirled together in his eyes. When (Y/N) face scrunched in pain and agony. "I'm sorry (Y/N). What kind of brother am i" 'No I can't think negatively but stay positive for (Y/N). Wait..' He notices something. (Y/N) looks younger when they were in their genin days. Then he looked at his hand to see it more chubby than before. He touches his face and pinch his cheek and felt it fatter. One thing he knew was that they had become their twelve-year self. He wanted to cry out in agony. But something made him more unhappy. He had to go through puberty again. Instead of thinking what had happened like is Konoha is it destroyed? Did they win the war? Puberty was the first thing came to mind than his home. ("Wow I feel the love," Konoha 12 and their sensei said sarcastically)

"WHY KAMI-SAMA. I HAVE TO GO THROUGH PUBERTY AGAIN!" He screamed to the sky. Birds flew out of the trees into the sky. He bowed his head and anime cried. "N-n-naruto Nii-chan" A voice called to him but the pain was heard in the unknown voice. His head flew towards (Y/N) and burst out in tear when he saw (Y/N) sitting upside. Then his arms threw out to (Y/N) in a bone crushing hug. 'Oh! Naruto gives her space. It looks like she can't breathe.' Kurama said. (Y/N) looked blue and gasping for air. Naruto released her and chuckled at his doings. (Y/N) fallen down "I missed you sweet air"(Y/N) said dramatically and her hands thrown in the air and brought it down. Like air was god itself. Naruto burst out laughing. Well, gaki I'm taking a nap for a while to consider energy. Don't die on me. But knowing you both will be in big trouble already' He grunted in annoyance. 'Hai' both blond twins said. "Let's change our clothes Nii-Chan" (Y/N) said facing her brother. He nodded. Ironically their choices fit their smaller bodies.

Swoosh, swoosh. Hooves slapping on the ground. Voices calling either for help or shouting to their fellow comrades.

These unknown people were riding on different horse. Wearing uniforms consisting of a short, light brown jacket with the badge of the squad on both shoulders, on the front left pocket and on the center of the back, a light-colored shirt, a dark brown sash around the waist covering the hips, white pants, and dark brown knee-high leather boots. The members often wear a heavy, green, hip-length hooded cloak with the Wings of Freedom on the white wing is on top of the blue wing. On their waist their wad a vertical maneuvering equipment, which is also their main weapon used in conjunction with two snap-off blades attached to the hand grips which is called 3mg. In front of the group is commander Erwin his blond hair kept neatly parted on the left side. His eyebrows were also quite noticeable, is very thick and bushy. He had icy blue eyes being one of his most striking features. He also wore a small, emerald bolo tie around his neck. Next to his left was Corporal Levi he has short, straight black hair styled in an undercut, as well as narrow, intimidating dull gray eyes with dark circles under them and a deceptively youthful face. He is quite short, but his physique is well-developed in musculature. He could pack a powerful punch. With his uniform, he also wears a white ascot. With his squad, Petra was a relatively short woman with blonde hair and brown eyes. She wore the typical uniform of a member of the Survey Corps, with a white button-up shirt underneath. Oluo Bozado he had a much older appearance than his peers, having more pronounced wrinkles despite being implied to be around the same age as his team mates. He had slightly curly, light brown hair styled in an undercut and small hazel eyes. He wore the standard Survey Corps uniform, as well as a cravat, and his eyebrows were often pulled down in a condescending manner, similar to Levi. Oluo styled his hair and cravat to resemble his Captain, Levi. Then there was Eld Jinn he had brown eyes and long blond hair which had a middle parting and a bun folded at the back to keep his hair tied. He also had a small beard. He had small brown eyes and a serious face. Like most other Survey Corps members, he wore a green cloak with The Wings of Freedom emblem on the back. He wore the same uniform as the other scouts and had a white shirt underneath. The final member Gunther Schultz was a man of average height with a slightly darker skin tone. He wore a short crop of brown hair that was kept to a point on the back of his head. As most of the soldiers, his attire consisted of a short light brown leather jacket with the badge of the Survey Corps on both shoulders, on the front left pocket and on the center of the back, a light-colored shirt, a dark brown sash around the waist covering the hips, white pants and dark brown knee-high leather boots. Additionally, he was often seen wearing a green cape that the soldiers usually use for traveling with the symbol of the Survey Corps on his back. To Erwin right, was Hange Zoe she has wide, light brown eyes and medium-length dark brown hair that she often keeps tied up in an unkempt high pony tail with bangs parted down the middle. They were keeping the look out for their safety from the titan. They had finished their expedition and finally heading home. But the saddest part was the casualty that has been at least 30%. In the pit of their stomachs, something is bound to happen. They heard hooves that belong to a horse coming up to them. They look at the person who was Mike Zacharias was a tall and well-built man. The bangs of his blond hair were parted down the middle, and he had a dark mustache and beard. Similar to Erwin Smith, Mike was almost always seen wearing a serious, calm expression. He was typically seen dressed in the standard Survey Corps uniform but also wore the Survey Corps' signature green cape during expeditions.

"Commander," He said with an expression showing trouble as well in awe. Erwin looks to Mike and nodded. wondering what could make that face telling him to process. "I don't know if I'm imagining this. But.." Mike bit his lip not knowing how to say it.

Levi became annoyed "Mike just spit it out" He was becoming very irritated. With his clothes dirty. He needed a bath and he needs it fast.

"I sniff the air to see if their Titans. But didn't smelled something impossible with titan roaming around" He said. Their eyes widen. Thinking of all the possibility. Hange drooled about a new breed of Titan to experiment on. But something that shocked them to the core as well the other soldier close by. With Titan passing through different locations.

"I smell two other people other than us" He finally said to the shell shock group.