Yo! Back another chapter of Humanity's savior. This will be the last arc of Eren training before they leave the walls.

"Speaking"

'Thinking'

Enjoy.


"What are you doing?" Annie confusedly asked.

"You'll see," Naruto said with a smirk.

Naruto looked at Annie to see a grumpy look on her because of his answer. He looked back down and continued to draw seals on a small piece of paper. After a couple of minutes of constant drawing, he stood up.

"Finish." He said, "Now I need to stick these papers on your arms, legs, and torso." Naruto said while flipping the paper in his hand.

"Why?" Annie asked while attentively looking at the seals.

"These seals are like weights, 50 pounds each in particular," Naruto answered, now standing in front of Annie.

"Take off your jacket."

"Uh, what?"

"I need to apply these onto your skin. These seals need physical contact with the muscles in order to work properly unless you want your jacket to weigh 150 pounds." Naruto explained.

Soon enough Annie had her hood sweater and jacket in her hand. Naruto looked at her new appearance, changed into a basic muscle shirt and dark gray pants Naruto carefully measured the seal before applying it on her bicep and tricep. He repeated the same action with her other arm. He took a step back and watched as her arms seemed to drop to her sides quite fast.

"How do you feel?" He asked.

"I'm fine," Annie said while slowly flexing her arms in discomfort.

"Good, I need to put one on your torso," Naruto said.

"Fine."

Naruto watched as Annie lifted her muscle shirt just enough to expose her muscular 6 pack. Naruto carefully placed the seal on her torso before performing a rat seal. He examined Annie's body and slowly dropped a couple of inches.

"Now, last is for your legs."

He waited patiently as Annie rolled her pants up until her calves were exposed. He proceeded to apply both seals on her toned calves and managed to catch her before she fell.

"Are you still fine?" He said with a smirk.

He chuckled slightly as her expression turned into a hateful one. "Now try walking around so you get used to the seals. When you finally feel comfortable with the seals then start jogging." He said.

He smiled fondly as he felt glares sent at his back. He chuckled slightly as he remembered the first he experienced those seals by Ero-sennin.

(Later)

Naruto watched as Annie was now picking up the pace. She was sweating profusely but nonetheless kept on jogging.

"That's enough for right now!" He called out, causing her to stop, "Start performing flexibility exercises, then mediate." He commended.

She nodded before continuing her drills.

Soon after she finished her drills he approached her with a cloth in his hand. "blindfold yourself with this." He said.

She sent him a confusing look but followed his instructions.

"For the next two weeks, you are to be blindfolded while off duty. This will enhance your instincts and hearing in order to dodge more effectiveness. For now, I will move and you are to point in my direction. If you guess correctly then I will make the drill harder. If you guess wrong then you are forced to dodge my attacks." He said.

She gave him a stern look but proceeded to tie the cloth tightly around her head, effectivity blinding her.

'First I will do 5 feet, 10 feet, and so on.' Naruto thought as he relocated himself. He didn't try to conceal his footsteps as it would be impossible for her to find him. He stood in front of her slightly to her left. He nodded as she perfectly pointed at him.

"Correct."

He repeated the same action 10 times until he walked 10 feet away from her. "I moved back 5 feet so it should be harder to locate me."

He walked in front of her and stopped. He saw as she pointed right where he was. He then walked to his right then left and stopped. He watched as she pointed at the spot he would have been if he didn't walk to the left.

"Incorrect."

He appeared behind and pushed her slightly with his palm. "Pay close attention to anything around you. I managed to get behind you and you still thought I was in front you." He said.

They repeated the same drill until she was able to get an average score on 10 feet radius.

(1 Week Later)

"Follow my movement, copy them," Naruto said as he stood in front of Annie. He was currently training her to read his movements. He pulled back his right arm which touched his chest, she followed along. He repeated to get in a striking position until Annie was able to successfully copy his movements.

"Good, you should now be able to determine the amount of power I put in my strikes. Using your hearing is important to predict where the attacker will attack and how strong. If the enemy moves fast, you move fast; If the enemy moves slow, you move slow; If the enemy does not move, you do not move; and finally, if the enemy moves slightly, you move first. " He explained getting a firm nod from Annie.

He sent a punch aimed towards her head. He watched as she swiftly dodged the punch and was now on his right side. She grabbed his arm from below and above his elbow and brought it down with force. She stopped centimeters from his elbow which would have broken it in a way it shouldn't bend.

"Decent move for anyone who is weaker than you. You overextended yourself quite a bit. If your opponent was able to read then it could have easily countered your attack. Don't spend so much energy on such a risky attack, be fast and strong." He said.

They continued to train until it was close to dark. With a flash, he was able to teleport her to her home in Wall Sina. With another flash, he came to a scene of Hange writing down a report of today's training.

"How's he doing?" He asked as he peeked over Hange's shoulder into her notebook.

"So far so good, he seems to be comfortable in his new body. He can perform the martial arts that were taught to him in his training days." Hange answered.

Naruto looked away in thought. 'Ah yes, he would ask Annie for training, wouldn't he? She was quite ruthless from what he saw when they would train.' He thought.

He also managed to train Armin and Mikasa while Annie taught Eren. While they probably wouldn't need it, it's best to be ready than not to be. He thought back to those days and still couldn't get this idea out of his head.

The armor titan or the colossal titan once again disappeared without a trace. He gave his concern to Levi and Hange but they were also in the same boat as him. Levi was present during the battle until the end and Hange only came after the battle.

"Say." he said getting the attention of Hange, "Whenever Eren would transform a bolt of lightning would occur." He said while thinking deeply for answers.

"Rightttt?" Hange said confusedly not getting at Naruto's question.

"Somehow the colossal titan appeared next to the walls without no one seeing it despite its size. A bolt of lightning similar to Eren's also struck where it stood when it appeared, as well for the armored titan. Normal titans don't just teleport, how do we know if Eren is the only human who can transform into a titan?" He asked, now looking at Hange's shocked eyes.

"That would mean that there are other humans trying to kill humanity?!" Hange stood up in shock.

"They also appeared when most of the survey corps were out on an expedition. There's a chance that we have an intruder among the ranks." Naruto said.

He watched as she wrote down notes quite fast without care of her handwriting. He remembered back when he fought the titan. They clearly had a way to think since they went straight for the walls and disappeared. There are two more titans shifters other than Eren, so two spies in the ranks. It clearly wouldn't be a woman since they were both males from what he saw.

'Maybe Kurama has a scent on the colossal titan?' Naruto thought.

"I will report this to Erwin!" Hange suddenly spoke up causing Naruto to stop his thinking.

He nodded and watched her runoff in the direction of HQ.

Who would it be?

"We need to find this intruder before they could perform another attack," Naruto said.

"How sure are you about this?" Erwin asked with a stern face.

"And you are saying this Sasuke guy can be working with them?" Levi asked.

"Yes, he had appeared twice when Wall Maria fell and attacked on Trost."

"Who is this Sasuke guy?" Hange asked.

He took a deep breath before he continued to explain his past life.

"From there we were sucked into a wormhole which ended up here. He will do anything to head back home or possibly conquer this world as his own.

"Why didn't you say this before?" Erwin asked.

"You both knew about this?!" Hange asked.

Both Levi and Erwin proceed to nod to her question.

"We are in the unknown, while our enemies have information on us we have nothing on them. If we proceed with plans it can backfire on us quite bad. Sasuke is probably only working with them because they might have a common enemy. We know Naruto is an enemy but there must be a reason why they sided with him. The only best option we have right now is to wait and see what they do." Levi said as he too was in deep thought.

"Do you think they had a hand in killing Sonny and bean?" Hange asked.

"Most likely, it seems they don't want us learning about the titans as well." Erwin said, "We need to head towards Shiganshina District and get into that basement. That is our only hope of knowing about these walls and the titans. We will leave the walls in a week in order to achieve such information. If our information is right then they will go after Eren to get his titan." He said.

We don't know if there are more that can transform into a titan but we need to bait them. Erwin, I'm assured you can come up with a plan?" Naruto asked, receiving a nod in return.

"And if this doesn't work out?" Levi asked.

"They will take Eren and Sasuke will come to kill me."


Annnd done! The next chapter(s) will be about the 57th expedition outside the walls. I found it quite interesting to make Naruto and Annie have a bond so we will see that. Until later, stay safe!