"Amazing, I'm this close and they can't sense me."
A Tentacle Jacket that absorbed all of her excess magic to make her completely undetectable by normal sensing means. Only god-tier sensing and senjutsu would be able to detect her magical energy while she wore the jacket over her clothes. Serafall and Naruto were sitting on a nearby roof watching the battle go down between Rias and her peerage, Xenovia and Irina, going up against Kokabiel, Freed, some dude Naruto didn't know, and 3 Fallen Angels.
Naruto was silent.
'Asia... you're going to get so hurt.' Naruto had a small black ball of magical energy in his hand that he kept pointed at Kokabiel at ALL times. Asia had wanted to help Rias and heal them when they got hurt, so she joined in the battle. Naruto didn't fight her, but she was the only reason that he was even this close to the battle. He would have avoided it completely after making the city Kokabiel-proof, and prepared to go to a different city.
The second Kokabiel made a move against Asia, Naruto was blasting him and over half of the forest behind him into pieces.
"... How long have you known about God?" Serafall asked Naruto a little seriously.
"Since I made those rings, no god would allow somebody to go against their system as heavily as I have. I've tampered with Sacred Gears, made rings that allow Devils to gain holy immunity, created monsters with holy powers... I've stuck my hands so deep into the realm of god that no almighty power would allow me to remain standing." Naruto had done things that no other man before him had done. "I'm dense and stupid, but I'm not an idiot." Naruto kept his eyes on the combat below them.
Irina was fighting well with Excalibur Tura at her side, but that wasn't the important thing. His power up given to her was allowing her to fight at a greater force than Freed and his Fused Excalibur were able to match.
2 of the Fallen Angels were just murdered by Xenovia as she removed their heads from their shoulders with her Durandal, and Kiba joined Irina and started to more quickly overwhelm Freed. It would be a matter of time before Freed was defeated and his Fused Excalibur was devoured by Tura.
Kokabiel was just watching and he would summon a familiar, multiple three headed dogs, to join in the battle against Rias and her peerage.
"No, his death has been the most highly guarded secret. While the deaths of the original Devil Kings couldn't be hidden, things would go bad for all factions if the big man's death was discovered. You're one of the first people to ever... ooooh... seems that things are getting spicy." Serafall stopped what she was saying. At this rate, there wouldn't be much for her to do. Issei had transformed a large amount of stored up power to Rias and Akeno, who completely destroyed Kokabiel's familiars. "... and Kiba is about to awaken his Balance Breaker." Serafall looked at Kiba as he stopped helping Irina and started to go after the unknown man to Naruto.
The man was had tossed a blue gem onto the ground in front of Kiba.
"A Balance Breaker you say?"
"Sup White Dragon, are you here to get your bi-monthly?" Naruto asked as he looked and saw Vali Lucifer standing behind him.
The teenager put his hands in his way-to-tight pants and smirked.
"Not this time, I was asked by Azazel to take care of Kokabiel if it looks like the others are going to lose... but since the world's most powerful perverted prankster is here, it seems I won't be needed." Vali stated as he surprised Serafall, who had stopped paying attention to what was happening inside of the barrier around the school, and turned to see Vali there.
"... You're the holder of Divine Dividing... how do you two know each other?" Serafall pointed between Naruto and Vali.
They pointed at each other.
"This asshole tried to recruit me to join his group, the girl who I won Ruler from told this dude about my magical reserves. We had a contest, if he could drain more than half of my magical power, then I would join him." Naruto stated as he gestured with his thumb to Vali.
The person who could half a person's abilities with his Sacred Gear.
"I halfed his magical power a single time and then it completely overloaded my Sacred Gear, and the excess energy nearly killed me. Every other month, I pay this asshole a visit to buy a couple of his older potions from him." Vali returned Naruto's insult towards him. Naruto was a person that was completely immune to his Sacred Gear, not because of the fact that he was immune to the power, but the fact that if Vali tried to use his Sacred Gear against Naruto he would end up killing himself.
Serafall was shocked.
"What!? The Divine Dividing has that weakness!?"
"The same as the Boosted Gear, once our bodies reach their limit on how much they can absorb or contain, going any further puts our lives at risk. Usually, when I reach my limit I stop halving my opponent and release the excess energy out of my wings... but this idiot has so much magical power that halving his power just once is such a massive overload that I can't release the energy fast enough." Vali smacked Naruto on top of the head a couple of times, something Naruto completely ignored as Vali sat down and made himself comfortable.
Serafall looked at Issei.
"Huh... who know that flaw existed, the more you know. So, you must be pretty disappointed in Issei then." Serafall knew that Issei was on track to becoming known as the Weakest Wielder of the Boosted Gear of all time.
Vali smirked.
"If he isn't strong enough, I'll kill him and wait for the next Boosted Gear user to appear... and then again and again until I'm defeated. It's how the cycle goes... though I don't particular feel any resentment towards Issei for being weak... I don't even feel much of an urge to fight him as he is now." Vali stated with crossed arms. If you knew him well enough, you could tell that he was in a good mood.
Kokabiel didn't know it, but he was in a LOT of danger.
Sitting close by him, were 3 people who could easily destroy him, and all of them were waiting for him to fuck up. Serafall was ordered by Naruto, and Naruto was going to get him before Serafall if he targetted the wrong person, with Vali going to get him on Azazel's orders.
"I'm shocked you aren't on Kokabiel's side... a peaceful three factions means weaker future generations."
Vali smirked.
"I'll kill myself the second I don't have any worthy challengers left, but I've already taken care of what I plan for the future... seems priest has revealed a sinister truth, and the sword boy has awakened his Balance Breaker."
Naruto saw that Freed had been defeated and Irina's Excalibur Tura had eaten the pieces of the Fused Excalibur, thus becoming extremely close to realizing it's true power. They all sat in silence as things started to play out.
Kokabiel attacked.
He defeated Irina with a surprise attack, sending a spear of light through her stomach and pinning her to the ground.
"Did... she just orgasm?" Vali asked with confusion. "Your work I suppose?" He looked at Naruto, considering that before she passed out, Irina had unleashed a VERY loud scream with an orgasm. She went into shock from the sheer pain turned into pleasure.
Naruto glanced at Vali.
"... Maybe."
Koneko was quickly defeated as well, with none of the people present being able to really challenge him.
"Ah shit, I missed something when I was talking to you... when did Asia pass out?" Naruto asked Serafall, who barely took his eyes off of what was going on. At some point, Asia had passed out and Xenovia looked mortified. "... He revealed the truth about God... looks like everyone is a little shaken." Naruto ended the technique that he was holding by sealing it away into a storage sphere.
"So, who is going down there to defeat him?" Serafall asked as she watched everyone trying and failing to do more than scratch Kokabiel.
There were three of them who could defeat him, but only one of them was needed for the job.
"I would like to humiliate him, but lets make this a fair contest. Rock-Paper-Scissors seems like a good way for us to decide." Vali offered a suggestion for who was going to go down and defeat Kokabiel.
-3 Minutes Later-
'Damnit, now that Asia isn't a target, I didn't actually want to fight...' Naruto thought as he shattered the barrier around the school and landed between Rias' side and Kokabiel. He landed on his feet after having created a cushion of tentacles on the ground to soften the landing.
"Oh-ho... another challenger, fine by me... just another body to the starting pile of this war!" Kokabiel started to laugh when he saw Naruto.
This boy had so little magic that he couldn't even SENSE Naruto.
"Naruto, get out of the way, you're too weak to help, and your monsters are useless. He already tried to turn Kokabiel human, but he destroyed the potion before we could use it... you need to let us handle it." Xenovia shouted at Naruto. She knew that the ONLY magic she had ever seen him use was small magical spells, and that was it. Other than create monsters, he was absolutely useless in a fight by himself. "Your monsters won't be any help here either... he's too powerful. Just take Irina and the witch and run away, save those you can save." Xenovia rushed in front of Naruto to protect him so he could escape with Irina and Asia.
Naruto sighed.
"Naruto?" Rias asked Naruto, and he turned to face her with a forced smile.
"Sup, how is the horseshoe hanging? Is it still there?" Naruto asked her to lighten the mood, while placing a hand on Xenovia's shoulder and raised a finger into the air.
Everyone was frozen.
"Sup Kokabiel, seems you've been busy beating these guys. I really wish you would have decided against trying to hurt innocent people, that way I wouldn't have to get involved." Naruto pushed Xenovia onto the ground while she was frozen in place.
Kokabiel was frozen in place as well as he looked up at the sky above Naruto's raised finger.
There was a MASSIVE black magical ball floating above the city.
Not just in the city, but above the entire city of Kuoh was a massive ball that cast a shadow over the entire city itself.
'... That magical power... an attack of that size... would destroy this entire nation... and it's using... it was Naruto... it was Naruto's magical power that has been blanketting this entire town.'
-In Kyoto-
"... Mama?"
"Yes, I can see it too." Yasaka saw a massive, growing, black sphere appearing in the sky above Japan. The black sphere doubled in size until it was large enough that it cast a shadow over all of Japan, to the point they could look straight up and see the ball above them.
The black ball grew hands.
-In Kuoh-
"Kokabiel, you've told them about God... but you better start praying to him. Since I'm not good at magic, and anything less than this, and I'll start to lose control over it." Naruto stated as his raw magic ball grew hands and reached up into the sky and grabbed the moon itself. Cracks started to appear on the moon, and within moments the black ball ripped the moon in half. The black ball grew a mouth and pulled the two halfs of the moon out of orbit and swallowed the chunks.
Kokabiel started to sweat.
Hands started to grow more of the ball again, and the ball grew a massive eye as it looked down, and it's sharp teeth showed thousands of rows of pure death.
It started to breath.
Kokabiel tried to resist, but a massive gravity started to suck it towards the open mouth of the creature. Nobody else was effected by the gravity but him, and he created a spear of light and threw it towards Naruto. The attack changed directions though and was sucked up faster into the open mouth of the pure magic creature that Naruto had created.
"No... NO! I refuse to lose as easily as this, not to a human I've never heard of!"
Kokabiel was swallowed.
The magic monster in the sky stated to float higher and higher as it's arms were sucked back into it's body, and it's eye closed. With a closed mouth, it turned back into a black ball of magical energy. It flew quickly and replaced the spot where the moon had been, now the size of the moon that it had eaten.
Naruto raised both of his hands before he gripped them together.
"... Now face your prison, an eternity of pain and suffering, sealed away forever." Naruto transformed the magic ball, and used the swallowed moon inside of it as material to transform the magical ball into an exact replica of the moon in the sky. "May the magic of the moon forever keep you alive, so that you can learn your lesson. Once you have learned, only then will you die." Naruto stated, before he put his hands in his pockets and grinned.
Naruto turned and faced everyone who was still just looking at the sky in shock and awe.
-On the Nearby Rooftops-
"Ah... ah..."
"Naruto always calls himself a squishy mage who can't fight, but that's a lie... it's not that he can't fight, it's that there is nothing more that he hates in this world than using magic to hurt others. His magic is too strong, to the point that what he just did, is what it looks like when he is using enough magic that he has full control over it... and his magical reserves have already filled themselves back up to full power." Vali stated with a dark smile.
Serafall had collapsed at the sight of what Naruto had just done.
"Of course, he isn't lying all the way... when it comes to physical fighting, he IS a normal human... in that area, he can be beaten. The thing that holds Naruto back more than anything... is that nobody is able to help him control his magic... because he is the first magic user to ever have this much raw power at the literal tip of his finger." Vali sighed to himself as he felt that Naruto was not only completely filled with magical power again. He couldn't sense Naruto, but he could feel it. "Of course, nobody ever realizes how superior he is, simply because they are too inferior... but I've tasted that power of his... and it's only grown 10 times stronger since that day." Vali cursed to himself.
He had thought that he had made progress enough to challenge Naruto, but Naruto just kept having his magic reserves grow and grow without ever reaching a limit. Not only that, but his reserves refilled themselves so quickly that it didn't seem like they had a bottom to them.
"But... he's human."
"No, he's not... he is a monster shaped like a human." Vali summarized, before he summoned forth his Sacred Gear and started to fly away.
He wasn't needed here after all.