Hello everyone; thanks for reading my challenge. English is my third language so please bear with my poor grammar and poor use of words. This is my first time writing on any site.

This is a crossover challenge between high school DxD and Naruo, i would like to give it to any fanfic author interested (PM me for it). No, flames please. I am still in learning phase.

Read and review, tell me any shortcoming you find. Critical reviews regarding the story setup are most appreciated; they can help me write even better next time. If you liked the fic idea and challenge, please review it, it will motivate me to write more of ideas and challenges.

Edit: I have made some changes here and relaxed the restrictions. Special thanks to HeroLuffy726 for taking his time and pointing out my mistakes.

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Summary: Naruto learns a space time jutsu from forbidden scroll. When he was trying to escape Mizuki he performs the jutsu incorrectly, sending him and his friends to DxD verse. How their arrival there will change the events of DxD verse. Will the maelstrom rise there or will it dissolve to nothingness by the strong opponents it will face there.

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Part1: I am fucking awesome

Kid Naruto is learning shadow clone jutsu from the forbidden scroll when he comes across a jutsu, which is similar to rinnegan's space-time ninjutsu (i will leave the name to author's imagination). Miraculously our blonde head succeeds on his first try.

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Space time ninjutsu: A technique which requires a set of 100 handsigns to complete it. Users with low chakra reserves should never perform it. Only one person can pass through it at one time. Never perform it on a group as it has not been tested yet. The last hand sign is really important. There are total of 12 different handsigns to channel chakra and its combinations to perform a jutsu. Bird handsign to travel only within a city, Boar handsign to travel to a country level (japan size), Dog handsign to travel around a small planet (Moon size) and Dragon handsign to travel around a big planet (Earth size). Hare, Horse, Monkey, Ox, Ram, Rat, Serpent and Tiger handsigns have been tested, but the person who used it never returned.

Restriction: Cannot be performed using shadow clones. They dissolve before the hand signs are complete.

(Special note right under this technique description)

Note(Written by blood of the technique developer): Never ever try to us this technique by using words and then using the last seal. The results were catastrophic, we have experimented on this and the person who performed it... never mind can't say the consequences. But never perform the technique the way I mentioned before.

- Special thanks to 1st Leader of Uchiha Clan for successfully developing this Ninjutsu (submitted by Madara Uchiha to 1st hokage). May the Uchiha clan thrive and end this endless war soon.

Condition by Madara Uchiha: This technique should never be shared with anyone other than Senju Clan.

[AN: To readers wondering what the person was going to say in the note, here it is: If you perform the jutsu by using chakra embedded words only, nothing will happen and you will be drained of all of your chakra leading to death due to chakra exhaustion. If you perform even one single seal wrong, you may be able to develop a new jutsu or die a horrible death. Many people tried to make new jutsu out of it, but everyone died. Lastly, if you perform the jutsu by using chakra words and any of the last handseal, BOOM; they died from explosion that rivaled the Bijudama itself. This was used in the warring states period to inflict huge damage on other clans by infiltrating them and destroying the clan from inside. Since this cannot be performed using shadow clones, a living person sacrifice was made for greater good of the clan.]

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Back to Naruto:

Naruto uses it to open a gate to where Mizuki has told him to come. When he arrives there, he is unable to find Mizuki in surrounding area. He is still thinking about the "AWESOME" technique the scroll has provided him, so he once again opens the scroll to learn yet another technique. He comes upon a seal technique whose description is incomplete and "top secret, dattabayo" written on it. He doesn't care about the description, but "dattabayo" catches is eyes. Excited, he directly proceeds to memorize the seal diagrams and handsign (password) to activate the seal. As he was about to perform the hand signs to see any effect (he thinks that after performing the handsigns he will be able to perform the technique). Iruka appears demanding Naruto as to why is he running away with forbidden scroll.

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The "top secret technique": The user can stop the time for 'n' seconds. Those seconds depends on the amount of chakra the user input into the seal.

Estimated: you can stop time for an hour = 60 minutes = 3600 seconds for the amount of chakra Kurama posses (at efficiency of 100%).

It was originally designed by Kaguya Otsutsuki, which was later found in her ruins by Uzumaki clan-head with other awesome jutsus. Since the chakra requirement was at the level of 9 tails (estimated at that time, it actually required 10 tails chakra), the first person who performed the handsigns died due to chakra exhaustion (it was the clan head who started uzumaki clan and had insane chakra level). It came as a shock to Uzumaki as they have high chakra reservs and huge life force to back it up; even the leader was unable to perform the jutsu. Later when Uzumaki mastered seal making, the jutsu was once again taken up for experimentation. After few years, they were able to make seal which doesn't stop the time for as much long as the person wants (another wrong assumption from their part), but it stops time for a fixed amount of time depending on the chakra being infused in the seal. The efficiency when it first used was 0.001% and till now they were able to increase its efficiency to 1%. The seal works by constantly supplying it by chakra, you cannot perform any other technique or jutsu while in time stop mode.

Note: Only a Uzumaki or Uchiha with their sharingan can see this technique, but you need Uzumaki or Senju blood to make the seal.

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Back to where Naruto is:

Mizuki and Iruka are fighting, and Iruka is protecting Naruto. Naruto is panicking; he is unable to process why his two teachers are fighting with each other. So, he starts running away from them. Iruka leaves Mizuki and starts chasing Naruto to stop him. Panicked, he assumes that Iruka is going to kill him. He suddenly remembers that he has a technique for space-time transfer and starts performing the necessary handsigns.

Mizuki throws a large shuriken at Naruto. Surprised, Naruto starts calling for all the amount of chakra present inside him and starts performing the hand signs for space time ninjutsu.

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Inside Naruto's mind:

Kurama saw his only hope for survival (he doesn't want to spend his 20 years just floating on the planet just to reform) is to provide his chakra to Naruto. Kurama admits it or not, also believes in the prophecy of old toad sage in summoning world, that Naruto is the child of prophecy and will bring freedom to his brothers and sisters because he has seen the amount of hate and malice that was directed towards Naruto by the villagers and still Naruto managed to remain sane without harboring any ill will towards the villagers.

Kurama was also in panicked state because he has to do something quick or Naruto will get killed by Mizuki. He forgot Naruto's newly learned space time ninjutsu. So, he started channeling all the chakra he can pass through that damn seal.

Iruka blocks the thrown shuriken by his body so that it doesn't reach naruto. Huge amount of blood gets sprayed on Naruto's face. Seeing Iruka in this state, and the fire ball Mizuki is throwing towards them. Naruto started performing the hand signs for space time ninjutsu rapidly (there are around 100 signs just to perform it), unaware of the face of fear Mizuki is showing towards his red spitted eyes. In haste he performs the last handsign incorrectly, he performed Tiger seal instead of Bird seal (He will not remember the last seal he performed). A black portal appears and engulfs both iruka and naruto to transfer them to DxD world.

Unknown to all three present an Anbu (Dog) also engulfs in the jutsu, who was given orders by Hizuren to keep a close eye on Naruto and protect him whenever danger approaches Naruto. He was about to jump and protect them from the fireball, when the space transfer engulfs him too.

Unknown to trio, the forbidden scroll was left behind. Just as Mizuki was about to take the forbidden scroll a very angry, I mean really angry old man was in front of him. Hizuren was really really angry on himself, his inability to save Naruto and most above the all at the person in front of him. He can just hope that whatever Jutsu Naruto used doesn't end his life because he has never seen or heard anyone use a space time ninjutsu other than rinnegan users, who are just considered myth other than the god of shinobi himself.

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Part 2: The biggest mistake of my life

Meanwhile just before it all started, in Sunagakure:

As usual shinobi and villagers alike are trying to kill Gaara. A shinobi who lost his family during Shukaku attack wants his revenge. He steals forbidden scroll from Kazekage's building and comes across a kinjutsu of "void world transfer" (you can name whatever you want it to be). It requires the user to draw blood and chakra from inside his body to open a tear in time space inside void to transfer their loved ones to other world. Note that void tears a human body and deforms it. Also note that if the person inside the void remains into the void for more time than he should be, don't blame me for their death.

He doesn't know how the person who performed it recorded it in the forbidden scroll and doesn't give a shit about it. All he cares that he is now able to transfer Gaara to any other world even it causes his own life loss and if lucky that bastard can be killed too.

Gaara satisfied after killing 20 more shinobi after his life and quenching the thirst of blood of his mother, is now resting under the a tree and looking at the full moon. Suddenly a ninja appears and starts performing strange signs while laughing maniacally. He notices that a strange red blood bead starts forming on ninja's forehead as his face is becoming pale; as if he is losing blood. Gaara thinks that he should put up a barrier of sand in front of him and see the monkey's new technique for his amusement.

Inside Gaara's seal, Sukaku starts panicking as he recognizes the technique and starts shouting at Gaara to kill that man fast.

Gaara ignores his mother's call and watches as the red bead shoots towards him tearing a hole in his sand defence and sand armour to form a blood red (kamui type) spiral to swallow his whole being in it. Note: when the blood bead what shot at him, Shukaku called all of his chakra in Gaara's chakra network to protect his host inside void.

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Both Kurama and Shukaku will be exhausted from these events and will go in slumber for 1 year.

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Setting for kakashi and Iruka: They will land at different places in Devil part of DxD world in critical condition (They don't have tailed beasts inside them).

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Setting for Gaara and Naruto: They will be transported to human part of DxD world. They will be raised in orphanage after being caught by police.

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Power balance setting: Iruka will have higher magical reserves than Kakashi, but he will struggle to control it and use magical techniques. Kakashi will have his MS (kamui) and have lower magical reserves. Kakashi will be able to learn many magical techniques which require less magical reserves. Kakshi's MS will slowly loose its sight, the more he uses it. (In Obito fight Kakashi starts using his sight because he used kamui many times)

Naruto will have lower magical reserves than Gaara, but more than Iruka and Kakashi.

Our fellow ninjas will be able to use chakra in DxD world, and it will be different than Magic. So they will have both Magic and chakra.

(AN: Feel free to add any more technique and power balance settings)

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I have given the basic outline how to start the fic. The people to be transferred to dxd world are Kakashi, Iruka, Naruto, Gaara and both tailed beasts. If you want to add any more people from Naruto world to be in DxD world feel free to do so. I was thinking of adding Hinata or Sasuke, but couldn't think of a good scenario to do so.

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Challenge aspects that are expected to be fulfilled:

1. Naruto and Gaara are 12 when transferred.

2. Small harem (optional) (other girls can have friendly relationship or only teasing, not more than 5 members in each harem)

3. Iruka and Kakashi must become devil.

4. All the 4 people transferred, end up at different locations.

5. Naruto doesn't meet with Iruka and Kakashi till he is 16 (only if you want to turn naruto in devil), Or Naruto doesn't meet with them till age 13. (i am doing so for power balance) This is for late start in ninja arts.

6. They will befriend their tailed beasts at age of 14, after 1 year of awakening. The tailed beast will give them basic lectures of ninja, with Shukaku teaching sealing arts (fuinjutsu) and kurama teaching them ninjutsu.

7. There cannot be sage mode since he never meets Jiraya here. There will be tailed beast mode for both Gaara and Naruto.

8. Power Balance should be there, weak to strong characters and every fight should bring new challenge to characters.

9. Naruto should not become a killing machine (I know people like badass, killing for just offending type of MC. It just take away the essence from the story.)

10. Do not remove a single character from DxD world. It is disrespecting the original author himself.

11. Upload rate should be 1 chapter / month or higher rate of upload. If you want to drop it midway, please pass it to someone else.

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Edit: I have lowered the restrictions and requirements. Fell free to R & R.

If you have any other suggestions that you would like to add or if you want to take this challenge up. PM me.