One Month Later(Month 1, Year 2):

Shakya Training Ground, Buddha's Palace:

Isaiah's POV:

"Okay, so what are we starting with today?" I asked with an excited grin, Buddha just chuckling as he leaned on his khakkara that's always with him, with the rings of it clinging as he smirked at me.

"Meditation, boy." He said, deflating my excitement as he chuckled and sat down on the ground, gesturing for me to do so as well.

"I assume Okita's taught you the basics of meditation, yes?" I nodded at his question as I sat down cross-legged in front of him.

" 'Empty your mind and your heart, calm your heart and keep taking deep breaths until you fall into a trance.'" I repeated Okita's words and Buddha smiled as he nodded.

"Now, forget all that shit. It's utterly useless." I, as well as Okita and MacGregor who were standing on the side, stared at him in utter shock as Wukong just cackled with laughter.

"That method only works if you've already gained full control of your sins."

"Wait, the Seven Devil Sins?" I asked, interrupting him and yelping as a whack to my head hit me out of nowhere.

"Firstly, don't interrupt me ever or I'll kick your ass all across the mountain. Secondly, yes, the Seven Devil Sins. The source of power for all Devils and the starting point for when they can start becoming what you Devils classify as a 'Transcendental Devil' or a 'Super Devil'." He said with air quotes as his khakkara went back to floating parallel with the ground behind him, with me still rubbing the back of my head as he smirked.

"What do you think your sin or sins are? And before you ask, yes, it is possible for a Devil to have more than one sin. There's just one Primary Sin." He cut me off before I could ask and I nodded as I crossed my arms, thinking deeply under his amused gaze before I spoke.

"Well, I guess Lust & Greed are definitely my sins. I train too much to be slothful, I don't envy the things that others have, I don't feel like I want to devour everything so Gluttony is out, I don't rage like an idiot so that means Wrath is out and I don't have an overbearing sense of pride in myself so Pride is out. Yeah, I guess Lust & Greed are my sins, with one of them being my Primary sins." I said with a nod only to be confused at him smirking at me.

"Wrong. Lust and Greed are definitely your sins, but they're not your Primary Sins. Pride is." I just stared at him before snorting slightly in disbelief as I shook my head.

"No, I'm not too prideful to ask for help and I don't have too much pride in me to rely on others." He just confused me by laughing even more as he stood, gesturing for me to stay seated.

"When you fight, do you feel as if you can win that battle because you're stronger?"

"Uh, yes."

"Pride in your strength. When you're with your girlfriend, do you feel like she'll never betray you because of your power?"

"Um, yes, but also-!"

"Pride in your strength. When you're out with your friends and some idiots interrupt you, do you feel like you just want to destroy them because they're weak & insignificant insects?"

"Yes, but back to-!" I was interrupted once again.

"Pride in your strength. When you became the youngest High-Class Devil in history and the most powerful Devil of your generation, did you not feel as if you were the strongest?"

"Yes, but-!"

"Pride in your strength. When you're training, do you not do it so that you have certainty that you become the most powerful being in this world? To know that no matter who challenges they will be nothing more than a pest that you can eviscerate?"

"…Yes." I muttered with a sigh and he smiled.

"Pride in your strength." He said as he tapped the end of his khakkara against my chest, right over where my heart is.

"Your lust is focused on one person and your greed is only focused on gaining more and more power. That's why your pride is so overbearing compared to the others and that's also the sin we're focusing on first. Here's what I want you to do. For the next week, no training, no reading and 'no surprise attacks'. Spend time just thinking about that sense of pride inside of you. Revel in your accomplishment. Be proud of what you've done compared to others. Bathe in the fact that no one of your generation is stronger than you are."

"…So be a narcissistic dickhead?" I asked with a smirk and he chuckled as he nodded.

"Yes. Be a dickhead. Also, here." He said as he reached into his pants pocket before pulling out a dark purple envelope and tossing at me. Catching it, I stared in surprise at the name written in cursive on the front of it.

Akeno

"In your second year of training, you're now allowed to send letters to your friends. Okita didn't want you to, but I made him change his choice." Buddha said with a too-wide grin as he glanced at Okita, who shivered slightly to my shock before Buddha chuckled.

"Now run off and go be a prideful bastard!" He exclaimed as he waved his khakkara through the air and I chuckled as I nodded, standing up.

"Come, boy." I said to Bardou, who was laying off to the side, and he stretched as he stood up before trotting after me.

With Buddha & the Others:

3rd Person POV:

"So, why say my meditation methods are shit?" Okita asked as soon as Isaiah left and Buddha just glanced at him.

"Those methods are meant for samurai who follow a code of honour. In training, the boy fights with honour. On the battlefield, that boy is the epitome of fighting dirty. All your training methods taught him how to fight like a powerful human. Now I'm going to show him how to fight like a powerful Devil." Was all Buddha said before he walked off, Okita sighing as MacGregor patted his back and Wukong shook his head.

"There's still sensory training to look to." MacGregor said with a hesitant smile and Okita quickly went back to being cheerful as he cackled gleefully while practically skipping towards the dining room.

"…Your friend is one fucked-up bastard." Wukong said with a smirk and MacGregor just sighed.

"Tell me about it." Wukong just cackled at his words as they began walking towards the dining room.

With Isaiah:

Edge of the Mt. Everest Peak:

Isaiah's POV:

Staring out into the sea of clouds below me, I truly felt at peace. I didn't have to worry about Okita attacking me for the next week as I knew Buddha took his rules very seriously.

"Woof!" Bardou barked besides me, his tail wagging happily as he stared at the letter in my hands.

"Calm down, Bardy. I was going to read it." I said and he just whined at me to open it faster. Rolling my eyes with a smile, I opened the letter before reading it out loud.

Dear Isa

I'm currently hiding away from Rias, Koneko and Gasper while writing this. The amount of times the three of them asked me to write this is too many to even count.

That and the fact that Lady Gremory also wanted to write to 'her favourite student' is also making me hide away.

Everyone is still well here…well except for Lord Sirzechs since he still annoys Lady Grayfia on a daily basis, but that's not anything new. Lord Gremory and Lord Sirzechs were a bit gloomy for the first month of you not being here and we can see how much your presence means to them as they always turn to ask you a question at dinner only for your seat to be empty.

I miss you, especially. I miss waking up to that bright smile and blue-grey eyes staring at me in amusement as I lay on you. The bed is cold without you and Koneko and I can't make it as warm as you use to. That warm yet dominating presence of yours is also something I miss and I know Koneko and Gasper does too.

Also, I miss those two buffoons Bardy and Joky. Tell them that we had a deal that they had to protect you no matter what and I expect them to do so or no more treats for them.

Oh, another thing! The notes from MacGregor finally helped me get full control over my Holy Lightning power. It still hurts a bit whenever I try to use it, but not as much as it usually would. Now, all I need to do is start mastering it.

I can already hear Rias coming close to where I'm hiding(which is your bathroom), so I'm going to have to end it here.

Love you always and I'm looking forward to your return.

Your darling Akeno

P.S. could you please make a mold of your dick? My fingers can't do the job anymore.

I rolled my eyes with a smirk at the end as Bardou mock-gagged next to me.

"You just wait until you find a mate. I'm so going to make fun of you." I said to him and he just barked with a happy smile as I chuckled and rubbed him behind his ear, staring out into the white void in front of me.

"Be prideful?" I muttered with a smirk as I stood up, taking a deep breath as Bardou stared curiously at me. I could feel Buddha and the others staring at me from where they were standing in Buddha's office. With a smirk, I activated Storm King's Aura to its fullest, a loud thunderous boom echoing through the mountaintop and making the clouds part before I grinned.

"Balance Break: Kamishiri no Yari." A small ninjato appeared in my hand, the blade a bright silver and the hilt a dark purple as I grinned before raising the blade high.

"To the Gods of all Pantheons and the Strongest Beings in this world! I swear that one day, I shall stand atop the heavens as the strongest! I will take you all down one by one until I alone am sitting on the Throne of Heaven! This I, Isaiah Azathoth, swear on my name!" And with a final shout, the blade extended upwards, a bright silver pillar rising above me and piercing the heavens themselves as I stared out into the blue sky in front of me.

"Throughout Heaven & Earth, I alone am the honoured one." I said with a grin and yet, I knew that all could hear it.

Finally! Isaiah Azathoth has arrived!

3rd Person's POV:

With Buddha & The Rest:

"Hahahaha! Yes, boy! Be the prideful bastard!" Buddha cackled with glee as Okita, Macgregor and Wukong could only stare at Isaiah in shock.

"…Okita, you may have made a mistake making Buddha his teacher." Wukong said as they stared at Isaiah, who was still in the same pose with a confident smirk on his face, Bardou barking happily as he transformed before letting out a torrent of flames above him as well.

"I think so too." Okita muttered as MacGregor just sighed and shook his head. Like teacher, like student.

Greco-Roman Pantheon:

Mt. Olympus:

"…I can't believe the audacity of that boy." A woman with auburn hair and dressed in greek armour muttered with a glare as they all stared at the boy, who was grinning arrogantly at them.

"What are you going to do, Father?" A muscular man asked, who was dressed in the same armour as the woman, only to freeze along with the other occupants of the room

Sitting in three large & unique thrones were three men.

The one in the middle was sitting on a throne of clouds, his blond hair cut short and his blue eyes sparking with electricity as his pristine white toga hit his muscular figure. Grasped in his right hand was a literal thunderbolt javelin, sparking with dense bolts of lightning. The man was smirking amusedly at the boy as an aura of bright blue lightning covered both the man and the javelin.

Sitting to his left was a literal skeleton dressed in formal dress robes, a bright crimson orb sitting in the middle of its chest as it sat on a throne of bones. Grasped in its right hand was a silver bident with another crimson orb sitting at the end of the bident. The skeleton/ lich was glaring at the boy as a pitch black aura covered it and its bident.

Sitting to the blond man's right was a black-haired man with sea-green eyes, sitting on a throne of water. An open Hawaiian shirt revealed his muscular upper body and he wore a pair of baggy shorts with tropical palm trees on it. Held in his right hand was a golden trident, sea weed wrapped around the middle of it to act as a grip. The black haired man was chuckling happily as a bright sea-green aura covered him and his trident.

"Come, boy. We, the Olympian Brotherhood, accept your challenge." The blonde-haired man said with a smirk, the skeleton and the black-haired man nodding in agreement at his words as their auras pulsed.

With the Norse Pantheon:

Asgard:

"Hahahaha! I accept your challenger, young warrior!" A burly, big-bellied man shouted with a gleeful smirk on his face, his messy beard and messy hair a bright crimson and dressed in the traditional garb of a viking warrior. Next to him on the table was a hammer with a large silver head that was engraved with numerous Nordic runes that was sparking with dense bolts of electricity. Covering both the man and the hammer was a bright blue aura that scorched the ground with electricity.

"A Devil challenging the Gods? Such arrogance! I shall show you what it means to face Loki, the Trickster God, himself." A silver-haired man said with a sadistic smirk, twirling a pair of knives in one hand. He was dressed in formal garb fit for a royal and a bright green aura covered both him and his pair of knives.

"The change of the world is approaching." An elderly man with gray hair and a long gray beard said with a smirk, a black eyepatch with gold linings covering his left eye as a black raven sat on his right shoulder and a white raven sat on his left shoulder. He was dressed in formal black robes and grasped in his left hand was a staff with a rainbow coloured gem at the top of it.

"We, The Jarls of Asgard, accept your challenge." The old man said with a smirk, the red-haired man raising a mug in agreement and the silver-haired man raising his knife as their auras pulsed.

With The Hindu Pantheon:

Varanasi:

"You seeing this, guys? A Devil is challenging every god in the world! Hahaha! This is going to be fun! I, Indra the King of the Hindu Gods, accept your challenge, boy!" A brown-haired man with dark blue blue eyes exclaimed as he sat in his throne, looking at the young man over the brim of his shades as his feet bounced excitedly. He was dressed in a dark blue button-up shirt that was open, revealing his lean and muscular upper body as he was wearing baggy shorts and flip-flops.

"This might be the change the world needs. We, the Trimurti, accept your challenge." A young, dark-skinned man with bright purple eyes spoke with a smirk, the six-armed dark green skinned behemoth on his right and the smiling young man dressed in just a pair of pants on his left nodding along with his words as their auras pulsed through the air.

With the Egyptian Pantheon:

Duat:

"I, Ra the God of the Sun, accept your challenge." A bald man said with a smirk, dressed in the formal garb of a Pharaoh and relaxing on a throne made out of lava. Grasped in his right hand was a golden whip, the ends braided with silver knives. A bright yellow aura covered the man before it pulsed with a deafening boom.

With the Shinto Pantheon:

Takamagahara:

"I suppose this must be the change Father spoke of. The anomaly that would change the world." A beautiful woman spoke, dressed in a bright orange kimono as the edges of her bright orange hair flickered like a burning flame and a fire burned in her orange eyes.

"Perhaps. You can't say the boy lacks confidence, though." A handsome silver-haired man said with a smirk, dressed in a dark silver kimono that matched his eyes.

"I say we accept it. I haven't had a decent fight in millennia." A black haired man said with an excited grin, dressed in the armour of a samurai as a katana rested at his side. Both the woman and the silver-haired man rolled their eyes, but didn't deny the armoured man his request as they turned to the vision of the boy.

"We, the Shinto Trinity, accept your challenge." A bright orange, sparkling silver and dark blue aura covered the woman, silver-haired man and armoured man respectively before their auras pulsed.

With the Angel Faction(Christian Faction):

Seventh Floor of Heaven:

"A Devil dares say that he'll sit on the throne of Father?! I say we kill him!" A blonde-haired man shouted, his 12 silver wings shimmering behind him as golden flames spewed out of his mouth with his rage.

"I agree! Let's show that Devil what it means to challenge Father!" Another blonde-haired man exclaimed in agreement, golden wisps of wind raging and twisting around him with his 12 silver wings spread out behind him as he glared at the visage of the boy.

"Now, now, brothers. He is but a child." A beautiful and buxom blonde woman with 12 silver wingers tried to calm them, golden water wrapping around the two men and calming their minds as they just sighed

"It's like sister said. We do not have to attack him. If he wants the throne of Father, he'll have to invade Heaven to get it. We'll take care of him if he does." A smiling blonde-haired man said as his 12 golden wings wrapped around the two men, calming the two men down and getting a nod of thanks from his youngest sister.

"What do you think we should do, little brother?" The man with the golden wings asked as he turned back to the occupant of the golden throne, the other three turning with them.

Sitting in the throne was a young man with blonde hair and a goatee, smirking as he stared at the young boy on the screen. 16 bright gold and large wings were spread out behind him, creating the visage of the perfect angel as his smirk turned into a beautiful smile.

"I, Jesus Christ & the son of God, accept your challenge, child." The man said, shocking his four siblings, as a bright gold aura appeared around him before it pulsed throughout all of Heaven.

'Show me why Father sent you here, my brother.' Jesus thought with a smile on his face as the visage of the young man disappeared.

A/N: Le Gasp! Yeah, now we're finally getting into the thick of it. For context, God is still the Father of Jesus and when Jesus ascended to Heaven after his death, he became the most powerful Great Seraph and also the Leader of Heaven.

Anyway, I don't know if I spelled the locations correctly or if I put enough pantheons in, but I'll leave it up to you to include whatever other pantheons you want in your head.

All that said, I'll see you all at the next chapter so until then…

Ba-Bye~!