A/N: Sorry, minna-sama. It's been a while, but I am finally back! Ehm, to tell you guys the truth, my absence was due to the fact that I has stopped writing stories. Kind of lost muse and kind of tired with other problems. Nevertheless, I decided to write once more. Don't know when I will lost muse again, but at least I managed to give you guys this chapter. My creativity may have dropped, but hope you guys will enjoy it.

It's been a week, since Naruto's battle with Thor. Of course, such a ruckus couldn't be left like that. So the 3 great factions sent their own men to Asgard to find out what happened there. The information they received shocked them greatly. Naruto, indeed managed to defeat the strongest god of Asgard.

Panic began to raise in Underworld. The council had no doubt that after Naruto recovers he will settle the score with them. Despite having 4 Maous, the fear in their heart was still present. 4 Maous were powerful, that was undeniable fact. But none of them were sure that they could handle Thor. Yep, even the ever unfearful Sirzechs Lucifer was not crazy enough to take on the Thunder god of Asgard. Physical strength was one matter, Thor was said to be a genius in battle and could has a will of steel that no beings possessed.

"We are doomed! We are doomed!" shouted out one of the devil in the council chamber, holding his head in panic.

"We should've killed him, when he was at the trial!" another shouted out with the same panic voice.

All Maous looked at them in disdain. The fear in them led to the foolish result. But now that the situation turned out like this, they all knew that they could only do one thing. Prepare for the battle with Naruto.

Each of them bit their lower lip in grief. Negotiation was out of question, because they knew Naruto too well and knew how stubborn he was. This may turn out to be as destructive as the previous war.

"See, who lead us to this situation?" Ajuka glared at the elders, causing them to sweat.

"W-we only want what is best for Underworld!" retort the female elder panickingly.

"T-that's right! See, the monster finally revealed his true color. He planned to destroy us from the beginning" added another.

Hearing those nonsense words coming out from the mouth of elders made The Maous seething with rage, especially Serafall, if Sirzechs wasn't there, that girl will rip those elders to pieces for sure. But still, that statement hit the nail and Serafall was furious.

"You fools didn't even want to admit that you were wrong! This should have never happened, if you treat Naruto-kun right!" raged Serafall with her hands shaking in fury. "By defeating Thor, he has proved that his power rivals ours. And by that time he decides to take action, I am sure that he will become even stronger than that! You are the ones that have doomed us all, foolish old coots!"

The elders all trembled in fear, with their mouth gaping like a fish, only when one of Maous pointed out the fact that they made a huge mistake, they admited it.

"S-so you weren't joking about that, Serafall-sama? I-I mean surely he wouldn't stand a chance against all Maous at one… Right?" stuttered the male elder sweating nervously.

Sirzechs stared at him for a bit, before he replied. "Do you know why Naruto-kun was called Ultimate?". The answer was a shake of head in negative. "Ultimate is a being that was created to surpass Gods, no, to surpass all beings and stand on the top if the food chain". Looking at everyone presents he stated gravely. "Do you really think that we have a chance to stop such creature?"

The elders widened their eyes in horror. Actually deep inside they admitted that they were wrong, but for some reason the other part wouldn't allow them to do that. Then there were the mysterious crimson pair of orbs acted like a control device for the brain.

Ajuka sighed and added his idea. "Anyway I wiĺl try to reinforce our King piece as much as I can. The rest of time, we will spend to boost up our magical reserves and techniques. This will be the hardest battle that we will ever have, harder then the previous war"

Falbium yawned loudly then muttered. "To think, we, The Four Satans need to take some brat so seriously. I think we have relax to much for that to happen"

Sirzechs chuckled and replied. "Guess you are right, Falbium-kun". But he turned serious right away. "Though no matter what. It is our duty to protect Netherworld. Even if it is our old friend, we can't overlook this anymore"

The decision was made. The other three nodded their head in confirmation. Serafall nodded hesitantly. To think they will take things this serious.

The Satans are officially preparing for the upcoming battle with the Ultimate.

Human world

Rias found out that many things happened, when Naruto left them. For start, she found out that her former sister-in-law Grayfia was not actually his brother's wife, she was like a kagemusha to his real wife. Rias felt betrayed and angered that one of the person she trusted, backstabbed her like that. The Princess has her suspicion at Grayfia's behavior since the accident with Kokabiel. Even though the later tried to hide it, Rias still noticed some trace of affection Grayfia has for Naruto.

The next is Naruto's battle in Asgard. Normally anyone that has challenged the mighty God of Thunder can be called crazy and suicide, but that didn't surprise Rias at all, that her former knight would do that. Simply because she has known one fact, even if he was emotionless, he still want to fight strong opponents. Though she was shocked, due to the fact that Naruto actually defeat Thor. Even knowing how strong Naruto was, she knew that Naruto's strength was not on Thor's level, close but not.

And the final fact that her brother sent her true sister-in-law to human world, so that they could spent time to find out more about each other. Currently, they are doing just that.

"It's actually the first time we meet each other, right, Rias-chan?" Lucretia asked her sister-in-law. She still has to wore a veil that covered her face due to her Charm.

"Yeah. Though I only heard a rumor about you. Who would have thought Onii-sama was actually wed to Lucretia Asmodeus, the only female beauty's that surpass of Aphrodite? It was shocking at first. I didn't even know that you were from the Old faction" replied Rias honestly.

"Maa, My father pampered me too much, always treat me like a helpless princess. I didn't know anything about the war, because my father brought me tons of video games and locked me in my room" respond Lucretia snickering at her memory. Her eyes shined brightly at the next comment. "But because of that I've become unrivaled gamer! Tehehe!"

Rias sweat dropped at her sister carefree attitude. "Glad for you".

Both stayed silent for a while, before Lucretia decided to ask carefully.

"Ne, Rias-chan?". Rias rolled her eyes to meet her sister's eyes. "How do you feel after, finding out that Gray-chan has gone with Naruto-kun?"

Immediately Rias eyes narrowed in fury. Calming down, she took a deep breath. "I-I felt betrayed. I mean even if me and her were not actually sisters-in-law, we were still friends. To think she would backstab me like that…"

"You know, Gray-chan never dud something like that for a man in the past. She did that because she was genuinely in love with Naruto-kun. To be with him, she decided to throw away anything behind. Even my friendship with her" retort Lucretia in sadness. The last comment was like a whisper.

Rias felt offered at her comment, "You want say that my love for Naruto is not genuine?"

"I never said that! I just want to say that Gray-chan feeling's for him a strong, strong enough to take on the world if that means to be with him. Now, I ask you, Rias-chan. You claimed, that you love Naruto-kun, but are you ready to do what Gray has done? To threw away everything to follow the one she loves?"

Rias felt irritated when Lucretia questioned her love for Naruto. She knew that she loves him, Bur she never thought about, leaving her family, her friends, just to follow him. At that moment, Rias cringed desperately, knowing there was a gap between hers and Grayfia's feelings. And that just made her fekt even more anger for The Strongest Queen.

Lucretia saw the sign of Rias' silence as the acceptance. To lighten the mood, she chuckled. "Gray-chan sure is amazing, right? Even I can truly admit, that I won't be able to do that in her shoes. I don't just have a enough courage to do that"

Chuckling, bitterly, Rias responded. "Yeah, it's frustrating to admit it, but Grayfia is amazing. But no matter what I will take Naruto back. At least, I want to hear the explanation for his actions"

Look back at the red head, Lucretia asked. "Maybe, you should give up"

"Huh?!" Rias exclaimed in shock. "Why did you suddenly said that?"

"You hurt yourself more than feeling happy by loving Naruto, right? Maybe, he is not for you. Hora". Lucretia pointed out at Issei, who was fooling around by chasing a giggling Asia. "That boy was head over heels for you, right? Maybe, you should give him a chance"

"Issei is like a brother to me! Besides love sometimes hurts, right? But I will overcome it and gain happiness" retort Rias stubbornly.

"Oh, is that so? But I see, that the boy truly love you" respond Lucretia, causing Rias to bit her lip in sympathy. "Despite acting like a pervert and always screams about creating his Harem, that boy truly loves you. How do you think he feels when all you have in mind is just Naruto? You don't even want to give him a chance to try to prove that he can make you happy as well"

With each sentence Rias felt even more conflicted, she won't give up the fact of chasing after Naruto, but she also felt that Lucretia was right. She didn't want to fall in love with another man, simply because she was scared that Naruto will hate her, even though deep inside she knew that won't ever happen, Naruto was too generous for that, even without emotions.

Actually she questioned herself many times. Why did she cling to Naruto so much? He never did show much affection to her, so why? The answer never came. She was confused about herself even now. But she finally can openly admit to the person next to her about her long time confusions.

"That's right, Lucretia-san. I don't even want to give a thought about giving a chance to Issei, because my mind can't discard Naruto from my head!"

"What do you mean by that?" wondered Lucretia.

"I can't explain that, but it kind of feels like we are bound by an invincible string of fate. Whenever I close my eyes, my thought automatically turned to Naruto, the same is when I was sad or when I was happy. All my thought always turned back to him. Sometimes, I felt angered by his behavior and just want to forget his face for a time being. But his face will always popped up again and again!" At that point, Rias' emotions overwhelmed her and tears poured out from those emerald orbs. Lucretia carefully enveloped to her chest, letting the Gremory princess poured out the rest of her emotions. "I should hate him! He betrayed me, betrayed my brother, betrayed the friends that trusted him! Then why can't I? To hate him would be much easier, so why-why can't I do that to escape that pain!"

Lucretia glanced down with half-lidded eyes while rubbing Rias's crimson locks. "That should be obvious by now. Because you love him. Also I apologize, for telling your feelings may be inferior to Grayfia. At this moment, you've proved my wrong, Rias-chan"

Cleaning her tears, Rias looked back into Lucretia's eyes with determination. "I won't lose to her! Definitely won't! My feelings won't ever lost to hers"

With a pitiful glance, Lucretia looked at the distance, where Issei was still talking to Asia. 'Boy, it seems you never stood a chance. But at least you have someone care for you and you don't need to chase after someone'

With Issei

Issei's fun conversations with Asia, was interrupted by Ddraig sudden question, mentally. Asia noticed Issei's palm glowed, so she left him with an understanding smile.

'What are you plan on doing from now, partner?'

'You are about Naruto-sensei's situation' replied Issei

'Yeah. I feel something really big will happen the next time we meet him. And by big, I mean colossal size. The white one will come as well'

'I still don't know… Sure, sensei was the one that taught me to be strong and thanks to him I can protect my precious one now. But, now he is my enemy. Want it or not, I will face him in a battle next time. However, I hope he could tell me his reasons and we can finish things without any regrettable consequence'

'If you think like that, then you arw clearly still don't understand the current situation' informed Ddraig, surprising Issei.

'What do you mean?'

'I haven't tell you this, but did you remember Naruto's Sacred Gear?'. Issei nodded his head. 'It was one of the mightiest weapon that the God has ever created to protect humanity from the Dragon of Apocalypse, Diablo'

'The Dragon of Apocalyse, Diablo?' exclaimed Issei in his mind.

'Yeah, it was a fearsome dragon, that can wiped out any beings in a blink of an eye. Both me and white one fought him once, but the result that we must flee after just one hit'.

Ddraig's confession made Issei's widened in shock. Sekiryutei, himself, admitted that he was no match to that dragon. Just what kind of monster is it? Not to mention, that he paired up with Albion at that time.

'T-then how in the world was he defeated?'

'Purgatory Blade of Illusions, Kokuten. It was a name of the original sword has sealed Diablo away with its power' respond Ddraig.

'You mean, Kokuten was not the true form of Naruto's Sacred Gear?'

'Correct' nodded the mighty dragon. 'Nobody knows what it looks like, as well as nobody knows who was the one that sealed Diablo away. But the rumors that I heard about that sword that it is an absolute sword. It can cut through anything, pierce through anything, anyone. The God created that sword by accident, but even he, it's creator, was not able to held it, because the sword didn't choose him as it's master. That sword was the only hope for him destroyed that creature. But since he couldn't use it, he was destroyed by that creature'

'I see. But what do you mean by that creature?'

'It's name was forbidden to say out loud. Because once pronounce it will brought unbearable amount of fear in the one's heart that did it. As of now, nobody say it, even the mightiest of the mightiest do not pronounce it's name' explained the Welsh dragon.

'Back to Naruto's matter. You suspect that Diablo will try to take over Naruto?'

'Yeah, one of the reasons why he must perfectly control his emotions, because Diablo is a very sly creature. The seal was created so that as long as the user can control himself, he would be able to keep Diablo in his invisible prison. Diablo can use the emotions to make the user goes crazy or even made him his puppet. But in that guy's case, it's even more complicate. He has devoured souls to get the power he has today. How much emotions do you think he would feel from those 5000 people?'. Issei's eyes widenned in realization. If those emotions overwhelm him, than Naruto may as well lose his mind, that's reason he decided to throw them away, but still couldn't. He only managed to suppress them. Diablo only need to wait until, his vessel reached his limit.

'I see that you finally understood. If things turned out a bad way, we have no choice, but to kill Naruto, before Diablo let lose. Or else everything will be destroyed' warned Ddraig, making Issei clutch his knuckles in grieve at the possibility.

With Vali

Albion has informed the same information to Vali. However unlike Issei, Vali just only wanted to defeat Naruto fair and square.

"I don't agree with that, Albion. If what you told me is true, than I want for Naruto to unleash that absolute blade and fight me with it"

"Don't be ridiculous, Vali! When Diablo get out he will wipe everything away from the face of Earth! I have fought him before I know that it is futile to fight him back" retort Albion

"You just underestimate our abilities too much, Albion. It's true that you can't defeat him in the past. But this time his power is limited due to the vessel. Besides you've never thought about evolving, do you?"

"Evolving? What do you mean by that?" Vali smirked and stared into a distance with his hands shoved into the pockets. "As Two Heavenly Dragons, both you gained a very big ego and arrogance. Because of that you both didn't try to evolve to become stronger, because there was no need for that. But as you can see, the time has come! Go beyond your limits and evolve yourself, my partner! Diablo has been sealed away too long, he will need time to unleash all his power and 1 battle won't be enough. We will finish him before he would get any stronger!"

"I see, as expected of you, Vali Lucifer! But that still didn't explain how you will force Naruto to unleash Kokuten true form?"

Vali smirked in excitement and respond. "I don't need to do anything. Knowing Naruto, he will be able to surprise me, once we defeated that nuisance of dragon of his. Then I can finally fight the strongest man and defeat him to prove that I am the one superior"

Out of nowhere Kuroka popped out and enveloped the Hakuryuko in a hug. "Nya, nya, Vali-kun is so impatient to fight Naru~"

"Let go, Kuroka" warned Vali closing his eyes. Kuroka puffed her cheeks and released him. Her eyes turned serious all of a sudden. "You can fight him and may broke some of his bones. But don't kill him! Kill him and you will regret that!"

The last warning was a serious threat by leaking the youki from her body. Vali has never seen Kuroka used all her abilities, so he would be a fool to pick a fight here. Besides he already knew, that Kuroka has chosen Naruto as her mate to repopulate her race, since he refused her.

Walking away, Vali waved his hand causing the Nekomata to huff and turned the other way.

At night

Somewhere in Vatican

One Xenovia was seen lying on the branch of a tree, looking up at the starry sky. Her thought was about a certain blond.

"Naruto-kun, are you ok? I will train to be much much stronger till I meet you again. This time I will make you see that I am not a burden, that I can fight side by side with you". Then her thought turned to her friends that she has left. "I am sorry, minna. But I will apologize for that later. Hopefully, Buchou can forgive this selfish behavior"

Asgard

It was already late in the realm of Nordic Gods. Thor has given Naruto a huge luxurious room to rest. Since his battle with Thor, Naruto was pretty much respect by all citizens here. Now, he was laying in the huge bed with some thought on his mind.

'I have 3 months to train before I go to the Underworld. Sure, the Satans won't just sit their ass there. Issei and Vali will be stronger as well'. Closing his eyes, he added. 'But I am at my limit now. I don't think I can suppress those emotions anymore, especially with all those affections that Grayfia was showing. No! I will do my best to keep that monster at bay'

He dived in the mindset of his without realizing it. Diablo towered him with his enormous size, a knowing grin is on his face.

"Human, you are at your limit now! Nothing can stop me to rampage once again! I only need to wait for a bit more. Hahahaha!"

Naruto narrowed his eyes at the dragon. "So you finally decided to show your true face, huh? Even if I am at my limit, I will do anything in my possibilities to stop you!"

Diablo scoffed unimpressed by the bluff. "Please, human! Your bluff won't work on me! I am inside your body, I know your condition best! You can't do shit to stop me! You only have 2 choice: 1) To go crazy by the flood of emotions and destroy the world; 2) let me take over and destroy the world. In either way, you will end up destroy this world"

"No! There is a 3rd choice, though I haven't found it yet. But I believe there is another way to stop the destruction of the world!"

Then once again he was back to reality. He noticed there was someone else was sitting on top of him. It was none other than Grayfia, in her seductive see-through nightgown. A naughty smile on her supple lips.

"Grayfia, what are you doing, here?"

The silver head didn't reply, but just scoot closer to his face and caress his cheek lovingly. Then she kissed both cheeks, the forehead and lightly shoved her tongue into his earlobe. Naruto saw that Grayfia has gone more extreme than she ever was. The Strongest Queen took out a pill from her cleavage, put it in her mouth and then smashed her lips to his and began to ravage his lips, by doing so made the blond swallow the pill. The pill was a special drug, that caused the whole organism to stay frozen for a specific time. Naruto only managed to whimpered some words, before he was knocked out by Grayfia.

"I-I should've expect this from you. Do whatever you want, I can no longer stop you"

Grayfia smiled, hearing that he has given the permission. Even though she was basically raping him.

"Arigato, Naruto-kun and I am sorry. But I can no longer hold back myself. Today I will make you mine officially!"

A/N: That's all for this chapter. To all those, who was curious about the last scene, I will answer. Yes! Naruto finally lost his virginity to Grayfia! But as I don't know how to write lemon, I just ended that in hiatus. Humm, time for some spoilers, Grayfia will get pregnant after this. Also their child will grow super fast, unlike any normal child.

Oh, also the next chapter is the timeskip of the 3 months and a long-awaited confrontation between our hero and Underworld faction. Naruto's goddess mother won't show herself anytime soon. That's it for now, I guess.

Ja ne! R&R