Hello! I'm glad people are enjoying this story so far.
I forgot to mention something last chapter, that I realised may seem off. The cannon of Naruto has been adjusted for this story. Naruto grew up knowing who his parents were, and someway or another the secret got out and almost everyone knows. I changed this because I was looking for a good way for Slayer to meet the kid when he was young, in order to influence what I feel to be one of the least intelligent main characters ever, and get an in with the leaf village. I immediately though up the convoluted scenario shown last chapter.

Konohagakure is a ninja village, thus overprotective security, and I don't think that a colossal armoured man wielding weapons of incredible power showing up out of nowhere could find a place in any hidden village without several important people vouching for him. For example, a young Naruto and an ANBU squad. And the only reason I feel the ANBU would vouch for him is if he saved their charge without any other motives, and the long walk back shows he can be trusted around Naruto alone for a period of time.

Anyway, I'm making an attempt to flesh out conversations, in order to make the story a little more involving and to increase the rather short length of the chapters. I did so with the first conversation between Hiruzen Sarutobi and the Doom Slayer. The Chapter itself is still relatively small, just over 1000 words without my rambling, so I will come back to this chapter in order to flesh out several other aspects later on. I was going to do so now, but I was already loosing my drive, and I was beginning to ramble (Like now), and I decided to just upload the short chapter as is.

So, without any further rambling, Chapter 2!

The Hokage was surprisingly kind, considering I had walked about an hour covered in blood with what he considered his grandson. When we got to his office he talked to Naruto for a few minutes, then sent him home with guards. He gestured to the seat in front of him, lighting his pipe as I sat down.
"What is your name?" He asked. I obliged.
"Slayer." I responded, and almost every last person who could hear me flinched violently. It was unintentional of course, if I had wanted to scare them I would do something more than say what I used as my name. The old man didn't flinch at all, his façade of an old man never wavering, yet revealing him as a strong warrior.
"Where are you from?"
"Most likely another dimension."
He looked at me curiously.
"Do you have proof?"
I handed over a datapad VEGA had prepared earlier. Sarutobi easily figured out how to use it, with only a brief instruction. As he leafed through it, he continued to ask me questions.
"What were you doing with Naruto?"
"I ran into the group of warriors who had kidnaped him. They attacked me first, so I killed them. I found Naruto bound and gagged in a cloth sack. I cut him free, and he persuaded me to accompany him on the way back."
His façade cracked, his hands tightening on the datapad as he heard what the ninja had done.
"I must thank you, for rescuing him. Now that he is home, what are you going to do next?"
"I am hoping that you would allow me a place in your village."
"Well. That may be possible. I would have to confer with my advisers, for a moment. Do you mind if I keep this 'datapad'?" I simply nodded. He waved his hand, and I walked out.

I waited outside for a few minutes as he talked with his advisers. He had decided to give me a small house and a starting pool of money, that would be paid back over time. He told me that I would be able to join his forces on probation. For now, I had guard duty, and occasionally I would be able to go along on missions for a decreased pay. He dismissed me after handing over what was basically a list of rules. I thanked him, and left, deciding to check out the house first.

The house was nothing much. Just a motor home sized house, with a cramped interior. It was good enough though, for personal space. I used the money to purchase some clothing and food, and then went on shift.

My first two weeks were pretty relaxed. The only things I did other than guard duty, was being dragged around by a hyperactive Naruto, and training. I spent only an hour or two in the small house each week to relax. It was on my 15th day, during an early morning run, I met who would become my training partner.

"YOSH! WHAT A WONDERFULL DAY TO FAN YOUR FLAMES OF YOUTH, FRIEND!" Yelled a loud man as he caught up to my 30km/h warm up. I tilted my head towards him, taking in his appearance in a glance before focussing on the warm-up. He appeared to be a jonin ninja, yet that was about all I could see apart from the glaringly bright green spandex, orange leg warmers, and monstrous eyebrows. I myself was wearing cargo pants, a tank top, and combat boots. Simple clothing, that was also useful.

Several laps of the village later he was as energetic as I first saw him, and was about to continue when he saw I was stopping.
"WHAT A GLORIOUS SHOW OF YOUTH FRIEND!" He shouted, before lowering his volume.
"You must tell me your name! I myself am Konoha's Sublime Green Beast of Prey; MAITO GAI!"
"Slayer. Just Slayer." I said, deciding to humour the one man fashion disaster.
"What an interesting name! Slayer! You appear to be strong, so in order to fan our flames of YOUTH I challenge you to a spar!" Gai yelled. I simply shrugged and nodded.

A second later, he yelled go and sped towards me. He was incredibly fast, but I was able to brush aside a wild right jab. I dodged the following uppercut, and he dodged my leg sweep. We were a blur of motion for at least 10 minutes before the first hit, blocking or dodging the other's hits. Right hook, left jab, right uppercut, swing the right elbow back and throw a left uppercut. That last one I managed to graze his chin with, as he back flipped and both his feet slammed into my jaw. First hit went to him, as I staggered from the sheer spine rattling power behind the hit.

He shot up, an incredibly worried look on his face. He most likely forgot to hold his strength back as the fight progressed. Fortunately for him, I was made of much stronger stuff than even chakra enhanced jonin, and was able to take the hit. It hurt like a runaway train, but he wasn't going to explode my skull. His face returned to his confident, yet not cocky grin, as he dodged away from my haymaker. I took a heavy step forward, boot slamming down on top of his sandals, before I spun viciously, and slammed the hard toe of my right combat boot into the side of his face. I also did not hold back, and his skull creaked from the power of it.

He was, impressively enough, able to stay almost completely still and grab my leg. Before he could slam an elbow into my kneecap, I spun to clockwise in his hold so I was facing away from him, and his elbow simply bent my leg back towards him. I used his additional force to break his hold, drop my leg down, grab his flak jacket, and throw him over my shoulder. He was able to pull me down past him, and quickly had me in a head lock. I was forced to tap out and concede the match.

I may have had more base strength and speed than him, but he was able to consciously reinforce his body with chakra. Also, he had at least 15 years of experience fighting with proper stances and moves against human enemies. I simply fought like a berserker, and had almost no experience getting into protracted fistfights with opponents who could dodge or take my hits.

After an odd speech about springtime, fire, and youth (I didn't really understand much of it, but I was almost positive he wasn't talking about kids burning things during a particular season), I asked him if he could teach me a few things. He agreed enthusiastically, then hugged me whilst crying. I had to fight all urges to draw a weapon as he attempted to break my spine.