Disclaimer: Naruto x Highschool DxD, I own nothing
Story Start!

"... aaaaaand... dead... man, this makes another group trying to do some great evil thing."

Uzumaki Naruto, 17 years old, wrote down the names of every person that had been willing to give him their names before their... unfortunate deaths. He was a moderate sized man, 170cm tall, and he wore an orange sweat shirt with grey sweatpants. He had a headband tied around his neck for the moment, and flip flops as his attire.

His old clothes were pretty much unusable.

He was blond haired with blue eyes, and had whisker marks on his cheeks... and he was not a person who belonged to the world that he was currently in. Most importantly he was a shinobi, a ninja who had done many things in his life. He had been, well, kind of screwed over by his own comrade. He had been sent to a new world, against his will, by his once best friend and rival Uchiha Sasuke... instead of fighting him fairly like a man, or even cheating during the fight like a ninja... he just didn't fight him at all.

"Joke is on Sasuke... even if he kills the Tailed Beasts, they will just respawn eventually... but it sucks..." Naruto closed his eyes, before he opened them up and showed they were golden, with cross shaped pupils.

He sensed everything.

His current goal?

Stop evil, insidious plans by evil people before they kick off. Then, he would go towards them, ask them a few questions. After that, he would decide if he would let them live or not.

Conditions to Kill
1. Heartless
2. Somewhat strong
3. VERY evil goals

If they fulfilled those three conditions, then he would kill them where they stood and destroy their entire group with a strong enough message of 'reform your group, and I come back'. He had already killed a few evil people, and destroyed a few groups thanks to his efforts. He had no patience for evil groups at this point, he just had the Akatsuki and Madara, and then Kaguya with Black Zetsu... and now he was trapped in a world that had a metric fuck-ton of evil groups. He was going to be nipping this problem before it started, and save himself the trouble of dealing with them after they grow stronger.

"... There is one." Naruto cloaked up as he spoke, entering his cloaked version of his Six Paths Sage Mode. He located the next evil person he could sense, before he started to fly in that direction. He went above the clouds, before he zoomed in a direction that seemed random to him.

It only took seconds.

He saw a small island nation, dropping down towards it and a city. Naruto's goal was still within his senses, so he quickly approached a building that seemed like... a school? Naruto dropped his transformation and started to walk towards the school.

"Hey, you can't be-"

Naruto knocked out whoever was trying to stop him with a chop to the forehead, getting the man to sleep with a light tap. Naruto entered the school and walked through the halls.

Why was a powerful evil being at a school?

Naruto entered a classroom, interrupting it completely, but not caring that much.

"Sir... this is a class, if you have a sibling you are viewing today-"

"Up up up... I don't have any siblings here." Naruto stopped the teacher from interrupting him. He looked at all of the students in the class, and he saw the parents of the students were standing at the back of the classroom, watching them in class. Naruto raised an eyebrow when he saw siblings instead of some parents, but soon enough he laid his eyes on the target.

A tall red haired man in a nice suit.

Naruto snapped his fingers and pointed at the man.

"You, I actually need to talk to you... I would prefer in private. I've got some questions for you... name?" Naruto asked the man his name.

"Sirzechs Gremory."

"... Okay, that is kind of a lie I guess... lets head out in the hallway." Naruto gestured to the hallway. Sirzechs seemed genuinely surprised as Naruto just walked out, and waited for the man to follow. Naruto waited patiently, since the man seemed like he wasn't going to start a fight in the classroom.

Finally, the man entered the hallway.

"I'm sorry, but... do I know you?" Sirzechs asked Naruto, since he had no clue who was in front of him, or asking for him.

"Uzumaki Naruto, and I just have a few questions for you... I noticed that when I was scanning this area, you have a very large, very destrutive, and very evil feeling to you... so I just have a few questions for you about that." Naruto introduced himself. He took out his notebook that he was using to record everything.

Now Sirzechs seemed kind of amused.

"... Are you with the Church... I assure you, that is just how the nature of my power feels..." Sirzechs paused when he noticed the blue eyes the teen had turned golden, and his pupils became crosses.

He froze.

Sirzechs felt an immense sense of danger, and he was on alert in an instant. He couldn't sense anything from Naruto, but he could tell... one wrong move and things would turn bad very quickly. He took a deep breath to calm himself down, before smiling pleasantly.

"I can tell if you lie to me... so my first question is, what are your goals?" Naruto clicked his pen a few times.

What?

"Uh... my goals... I guess peace between species. I want my sister and child to grow up in a world where they don't worry about war." Sirzechs wasn't expecting that strange question. He answered honestly, because his honest answer was what he believed to be his best answer. He made eye contact with Naruto for a second.

There was a long pause, before Naruto smiled at him.

"Okay, we're actually done here... I think I got everything I need from you. Your energy feels dark and evil, but your heart is clearly in the right place there. I couldn't sense any negative emotions from your words, so you weren't lying either. Sorry for the trouble." Naruto didn't need to ask anymore questions of the man. He was satisfied with the answer he got, and all of the feelings he got from the man when he answered the question.

The man before him had a very big and loving heart, and he had a noble goal, which was all Naruto needed to know to strike him from the list.

"Can I ask you a question?"

"Shoot."

"... What is this about?" Sirzechs asked Naruto, since he still had no idea who Naruto was. '... Anyone who can make ME feel this primal fear... is somebody I should have already known about... when I try to sense him, I feel my senses go haywire... it is so freaky.' Sirzechs was still on edge, but he found himself more relaxed than before. The dangerous feeling was gone now, and Naruto's eyes were blue again.

Naruto turned his notebook around.

He showed names of people and groups.

"I'm going around, tracking evil feeling people down, asking them their goals... if they lie to me and I sense their hearts are twisted, then I kill them and destroy their evil groups." Naruto didn't see the reason why he couldn't explain what he was doing.

Jaw slack.

What?

"I'm sorry... why... cough... Excuse me, but why are you going around doing this?" Sirzechs asked Naruto in a much more calm, serious tone. Naruto passed him his notebook, and showed him a list of names.

Khaos Brigade: Old Satan Faction
Dead: Shalba Beelzebub, Katerea Leviathan, Creusereyt Asmodeus
Old Satan Faction Goals: Kill the Satans and spread chaos through the factions

The top list of names was enough for Sirzechs to get a gauge of how much danger he might have been in if he had answered badly, since he saw some names he was aware of. He looked at the stated goals of the group, and realized that there had been a plot to kill him and destroy the peace he worked hard for.

"... Thank you very much for the help." Sirzechs saw that, and he couldn't stop himself from thanking Naruto for saving him a lot of trouble. He gave Naruto the notebook back, since there were dozens of groups listed on it. He felt that if he didn't look at the list, then it would save him even more trouble.

Sometimes ignorance was bliss, and he would rather not know all of the evil plots in the world that could have been.

"No problem, answering your question... I've got a bit of a bone to pick with evil groups. If the group is only a little evil or misguided, I'll just kick their asses hard enough to convince them to disband... I've got to check up on the Hero Brigade in a few weeks to make sure they are... being good children." Naruto's face darkened a little, since he had to deal with them a few days prior to what he had been doing.

"... Hero Brigade?" Sirzechs had no clue what that was either.

"Group of humans who wanted to slaughter and prove themselves better than supernatural people... I gave them a firm ass kicking. They weren't super evil... mostly just sad and misguided. They did lie to me though, so I needed to kick their asses a little harder because of it. If you can't be honest about your goals... then why even bother?" Naruto talked with Sirzechs, not believing the nerve that some people had. People needed to proudly claim what their goals were, otherwise why even strive for them at all?

Sirzechs felt that was another headache that was avoided, and he felt a really strong urge to ask questions.

...

"... A few weeks ago... a devil went missing... my friend's younger brother went missing, his name was... Diodora-"

"Dead."

"Dead?" Sirzechs asked, since Naruto gave an INSTANT answer to that one. He didn't even hesitate in answering the question, because there had been a string of devils who had gone to the human realm... and then just never returned. He actually came to the human realm to visit his sister and make sure she was safe. "... and... pray tell... why?" Sirzechs wanted to know why Naruto killed the boy.

"Rape, lots of rape... the dude was a serial rapist. I followed him and watched him get himself injured... and this girl was about to heal him. I think she was going to be his next victim... well... I stopped her and started questioning him... he admitted to everything... he has a list of at least 14 victims so far... So, I got him to confess, and then I ripped his heart out through his ass." Naruto had a deep scowl on his face for that one.

Sirzechs' had his asscheeks clench when he heard that phrase.

"... as in... literally?" Sirzechs really hoped Naruto didn't mean literally.

"No, I literally shoved my fist up his ass to grab his heart, and ripped it out. The dude made it his goal to mentally destroy people through deception and rape... he had no remourse for his actions, and I felt his death needed to reflect his crimes."

"Is the woman okay?" Sirzechs changed that topic.

"Yeah, but she was horrified... she had been about to heal the guy, and then she learned what he planned. You guys have a problem, like... do you know how many evil groups there are here... this is an insane number... and like... half of them want to destroy everything, or create mass chaos." Naruto complained, since he had been working tracking down and destroying entire groups for a few months now. He not only would defeat the leaders, he would track down each and every member of the group, and beat the hell out of them hard enough to make them REALLY regret joining the group.

"Yeah... apparently there were a LOT of problems I didn't know about."

"You guys aren't the only ones though... the people with the black bird wings had this asshole who wanted to start a war. He was plotting to steal some swords, kill some Rias and Sona girls, and spark a huge war... for no other reason than his own amusement." Naruto was just annoyed with how often he was finding new groups that needed to be destroyed.

Sirzechs choked on his spit when he heard that.

"WHAT!?"

Somebody had been targetting his SISTER to start a war, but Naruto just slapped his notebook.

"Yeah... everywhere I look, there are insane idiots... trying to end the world, trying to create chaos, trying to start wars, raping people because it's fun for them, plotting to wipe out... plotting to plot... plotting to plot of plotting... it's a headache." Naruto was only doing what he was doing because he would rather deal with it before the groups started to unleash their plans. It was much better to destroy them while they were still in the planning stages.

Sense them with Six Paths Sage Mode.
Interrogate them with Six Paths Sage Mode and Negative Emotion + Heart connections.
Kill/beat them and then track down all of the allies in their hearts, and the allies in the hearts of those allies.

"Why are you doing this... how does this benefit you?" Sirzechs didn't even know what to say.

He had no idea of any of this stuff.

"Because, when you have the power and ability to put a stop to something, put a stop to it before it becomes a problem... and... I don't benefit... I'm doing this because it needs to be done. Listen... I've gotta go... I'm very busy." Naruto gestured to the end of the hallway. He could see that Sirzechs was filled to the brim with questions, but he didn't have the time to answer all of them. So, Naruto turned around and started to walk away.

Nope, Naruto felt a hand on his shoulder.

"... You just told me you stopped many plots, one of which involved my sister... and you expect me to let you leave... without rewarding you greatly for your efforts?" Sirzechs NEEDED to give his thanks. He owed Naruto a lot, if only because he seemed to be doing the work that he, as a devil, would be overstepping treaties to do.

Nobody even asked him to do it, he just took it upon himself to go around and destroy villain groups just because he felt it was better to stop them earlier.

"Listen, if I stay too long, this Weirdly Sexy and Annoying Midget is going to show up and pester me."

"Weirdly Sexy and Annoying Midget?"

"... She is weirdly sexy... she doesn't wear an actual shirt, covers her nipples with tape... and has this weird goth vibe. She annoys me all the time, everywhere I go, she follows behind shortly after... demanding I kill some homeless dragon."

"Homeless dragon?"

"Yes, a homeless dragon who is just minding his own business... not really doing anything but weird flying tricks. So, this midget woman tracks me down, and demands me to kill the homeless dragon... we fight, I kick her ass, I walk away... then she comes back a few days later and does it all over again... and we're too late." Naruto sighed when he felt her before he saw her.

"Uzumaki Naruto... I, want you to kill Great Red."

"No, he's just minding his own business... I have no reason to kill him, and he isn't hurting anyone." Naruto saw the midget goth woman before Sirzechs did.

Sirzechs froze.

Ophis.

"You can kill him, so just do it. I, will reward you with whatever you wish." Ophis wanted the invader to do what she wanted him to do. She grabbed Naruto by the arm of his sweatshirt, and Naruto grabbed her by the back of her neck and lifted her up into the air.

"Well, it was nice seeing you... me and this midget are going to fight somewhere safe for others. You have a great day, stay safe... and if you find any evil groups, find a way to contact me, and I'll head right over." Naruto slung Ophis over his shoulder, and she didn't put up any resistance to the treatment.

"I, do not wish to fight. I, wish to talk."

"Well, then stop asking me to kill a homeless lizard."

"I, want him dead."

"I know, trust me... I fully understand... and you need to understand, I only kill super bad guys, and you have yet to convince me red boy is that bad." Naruto argued against the tiny dragon over his shoulder.

Sirzechs had no words.

"... Oh fuck..." Sirzechs lost control over his legs and grabbed the wall to hold himself up, feeling faint all of a sudden when Naruto and Ophis were out of sight. He felt like he was going to pass out, right then and there. "Oh shit... oh fuck... oh fuck... fuck." Sirzechs had never felt so weak at the knees in his life.

The weight of it all hit him.

-With Naruto-

"You owe me... you destroyed my Khaos Brigade."

"Your Khaos Brigade were evil... so they needed to be destroyed. Not my fault that you're a horrible judge of character." Naruto kept Ophis slung over his shoulder as he walked with her. She had been targetting him ever since he had destroyed one of the factions of her Khaos Brigade, and then she went after him more and more the more that he destroyed of her group. "Chaos is literally in the name... if it looks like a turd, and smells like a turd... I would bet it's a turd." Naruto wasn't having any of the guilt tripping.

"Great Red and I are equals, if we fight, there will be no winner... I, need an army to make my win overwhelming... and I, have no army now." Ophis needed overwhelming power to kill Great Red, or they would just be stuck in a stalemate forever. "I, and he... have reached the limits of our power. I, can grow no stronger, and neither can he... I, need an army." Ophis had to form her army so that she could overwhelm Great Red so bad that he couldn't even fight back.

Or she could just get this guy to do it, the same way he overwhelmed her when she fought him.

"I get that... but I'm not joining you to fight the hobo gecko." Naruto, no matter what she said, had no reason to get involved with her fight.

Naruto tossed Ophis on the ground.

"... I, do not wish to fight."

"Yeah, yeah I bet you don't... which is why we're going to fight. I want you to learn a lesson, and nothing is a better lesson than pain. It sucks being forced to fight is the lesson, and lets see if it has kicked in." Naruto transformed and cracked his knuckles.

Ophis felt an attack coming.

She dodged... but then she got hit anyway when an invisible punch connected with her hard enough to bruise her face. Only for Naruto to follow up with a direct hit to her lung.

All of her organs were destroyed.

She spat out copious amounts of blood when he did that DAMN thing when he ignored her defenses and attacked her organs directly. All of the organs in her torso were pretty much done for at the moment, and she would need awhile to recover and tranform her organs back to their healthy state. Well, most of them... he always left one of her lungs mostly intact, and her heart was left mostly untouched by the attack.

Even if she dodged an attack, it still hit her.
Then, if she DIDN'T dodge an attack, he ignored her durability completely and just destroyed her organs.

He was overwhelmingly fast, impossibly durable, and his strength exceeded her strength.

Naruto poked her forehead.

"... Now stop harassing me, because you never know when I'm going to snap and just cut your head off." Naruto stated as he poked her forehead. Naruto had no intention to follow through with his threat, at all, because despite her goal... she seemed more apathetic than evil, and all she wanted was to go home. It was just that her actions indirectly caused bad things to happen, so he wanted her to stop peacefully.

Naruto lifted his finger up.

A tiny Rasenshuriken formed on the tip of his finger, and he brought it down. He used the spinning blades to cut Ophis across the forearm, causing her to bleed.

"I, will be back."

"I, will kick your ass again... my advice to you... negotiate with red boy. Work out a deal with him or something... I don't know... he gets to be alone in that place during some days, and you get to be alone there other days... try peace instead of war." Naruto stood up and started to walk away. The only reason Red even took over his zone was because she left for years to explore the world apparently, which meant that she had no problem leaving her home to see the sights.

"That is my home... I, will not share it."

Naruto took a deep breath.

'... neither do I, which I why I'm going to make a home for myself.' Naruto was going to make the best of his horrible situation. He would destroy all of the evil groups he could sense, and then he would make himself a peaceful home where he didn't have to worry about solving world ending threats all of the time. He could genuinely sympathize with Ophis in that one aspect, since they were similar there.

All that was different was the approaches they were using to get homes.

Well, it was time to get back to his mission.

Chapter End!
Please Leave Me Lots of Nice Long Reviews, But No Flames Please!

DxD, but there are almost no huge villain plots by the time the main story starts.
No genuinely evil Khaos Brigade plotting.
No Diodora plans.
No Evil Gods plotting.
No Kokabiel war plots.
No Loki Ragnarok plots.
No Alliance of Hell team up.
No Trihexa awakening.

Nope, none of that.
All of that will get taken down by an overpowered ninja who just got sent to another world by his terrorist ex-friend, after fighting a war started by a terrorist group... Naruto has the ability and skills needed to track down every evil group... and shove his foot up their asses, and he is going to put those skills to use.