Custodian

Harry Potter/Highschool DxD
Harry Potter/?
I own nothing
This is my first fic in the Highschool DxD world.

V: "Well…Shit."

(Underworld)

Lucifer, Beelzebub and Leviathan positioned themselves along one side of an old oak table in the Lucifer Estate; in the North-western Wing of the Estate that had been described as the 'meeting room'. This meeting room seemed to be where the Lucifer's of old conducted there behind closed doors meetings and it was for this reason that Sirzechs was using it.

On the left-hand side of the table sat three rather comfortable looking chairs; let it never be said that Sirzechs Lucifer had the belief of 'meetings done on equal standing were more effective'. Anyhow the three on the left-hand side were a representation of the Fallen Angel Faction; The Grigori.

"Well shit…That's definitely disconcerting and slightly, ever so slightly worrying. A Custodian…Especially on of the Pantheons involved in the Britannia Matter. I thought they were killed off?" Baraquiel; the Lightning of God stated. Baraquiel was one of the few five paired wings in Azazael's faction of the Grigori and one of even fewer who wanted a peaceful co-existence with the two factions.

"What worries me Governor-General and Master of the Legion and good Mao, are both the Custodian's unwillingness to be named, lack of political stance and the very fact that they are very much a paradoxical non-entity and dangerous entity. They seem to be unwilling at worst and reluctant at best to address the rightful rulers of the territory in question."

"Well…shit, well shit indeed." Stated Ajuka; the Mao of R&D. "I do have a hypothesis; Mao-Lucifer and Governor-General…Who was it that reported this encounter with the Custodian?"

"Rias-san/Rias-tan." The approached individuals replied as one.

"Now, Mao Lucifer…I hate sounding…"

"Just spit it out Ajuka, no need for titles. We are merely agents of a much greater cause." Sirzechs replied with a smile.

Ajuka nodded "I think your excommunicated agent, dropped the distortion field trapping the Custodian inside. Custodian saw the agent kill someone, stepped in to avenge them. Killed them justifiably, but either does not care about propriety or did not know and was acting as defender of those who could help themselves…in essence a mortal super hero. Anyway, the victim had a summoning seal for Heiress Gremory who arrived to see the Custodian kill the Agent and botched the introduction. Thus, she reported it the way she has to save face and alert us that someone might have triggered the war."

The Fallen and Sirzechs collectively dropped their jaws at the Green-haired Mao "Well…shit. That changes nothing, the fact is we have effectively resolved what happened; I assume a within reason favour could be approached."

"We, well at least our faction of the Grigori would like for Houses Gremory and Sitri to allow us to have a larger presence in the territory known as Kuoh. Not massively but an overall presence between 5% and 10% of the entirety of Kuoh and to return to the status quo…And if possible, a white-flag meal with the Custodian should they have been brought to the table."

"Who would…" Serafall began to ask, because she knew her father was a stickler and worse than Tannin in terms of being prized away from his money. Mephisto Phele's had picked a very formidable queen who was now a king.

(Kuoh)

"Well…shit, Rias…You could have told us that a Custodian was in the school." Sona stated, as she tilted her glasses at her old friend.

"Do you have any idea of who it might be?"

Rias nodded primly "My Knight, informed me that his name is Potter Harry. A transfer."

Sona nodded "I saw his file…a smart student, smells different as well. He probably realised what he had done and has gone to ground. Rias, I shall deal with this, no offence Rias you have seriously made a mess out of this. But well done on getting your new piece for your peerage."

Rias nodded "Sona, I might need his services…He was POWERFUL! He was skilled!"

Sona nodded "Your engagement from Riser. Yes, I could see how he could be very useful to you. I, could use him in my peerage but I doubt he'd accept being a pawn; but I do not have any spaces for a bishop. Add the fact I do not know his skillset, he might just offset my entire strategy…I shall talk to him in school, under an excuse."

(Next morning)

Harry rolled out of bed, dressed himself and headed to school. This time he had Fragarach with him disguised a pen. On his person, he had an emerald that was supposedly linked with healing or at least regeneration.

After that altercation and the revelation of Rias, Akeno; Harry had recognised the hair and Kiba with another he knew of but not the face. They were devils; of course, they existed…He needed to be very careful. This luck landed him right until the middle of English…A lesson he was more teaching than doing anything else. "Can Potter Harry please report to the student council chambers."

Harry stood up "I don't know where that is…Someone allowed to help me?"

Soon enough he found himself in front of the ornately carved Sakura wood doors. He knocked and entered, inside was a very interesting sight. Three men in smart casual wear were present along with a shorter woman with an impressive bust. One of the men had hair, red as Rias's…a potential blood relative.

Harry channelled his werewolf senses; they all reeked of power. "You wanted to see me?"

Sona nodded "My Lords, Potter-san shall we begin?"

Harry was ready, his pen was in hand "You're going to attack us with a pen?" Mocked a blonde.

"Genshirou-san!" Snapped another member of the student council.

Harry enhanced his strength slightly, held out his hand "Accio, Genshirou! Dyrnwyn, too me!" There was a scarlet flash as the flaming sword appeared, out of Harry's back foot and several spells erupted and encased the room before vanishing.

The Student Council jerked backwards their batlike wings erupting as Harry held his swords fiery kept edge resting against the blonde's throat "Devils? Every single one of you are Devils or some other part of the Occult?"

Two of the men chuckled; the ones with red and green hair "That is correct…Again, this was an oversight on our part…We had no idea you would be this twitchy. Allow us to properly introduce ourselves, I'm Sirzechs Lucifer, this is Ajuka Beelzebub and finally Serafall Leviathan and this gentleman is Governor General Azazael."

"Well shit. I take it the Student Council are also Devils? Anyone else?" Harry asked.

"Release my Sister's Dragon foul fiend!" Serafall chirped. Harry cocked his head as Sona Leviathan face palmed.

"Aight." With that Harry released Genshirou, spun him and promptly hit him with a launching spell and sent him soaring across the room to crash heavily behind Sona.

"You never said how…Anyway, insincerely apologise for that. He brought that upon himself, now Sona Shitori? Sona Leviathan? What is it? I grow bored and tired of this pontification."

Sirzechs chuckled "Young Shitori is not a member of House Leviathan. But a member of House Sitri…Before we begin Serafall, Ajuka and I; we are not the original Lucifer, Beelzebub and Leviathan the same with the Asmodeus. We are the four strongest Devils and have been anointed the position of Devil King. We forsook our positions as Heirs and Heiresses of our original family; Gremory for me and Sitri for Serafall."

Harry nodded and bowed deeper to the President of the Student Council "My apologies Heiress Sitri…In fact my apologies to you all."

Azazael smirked at him "No worries…Now, we've been as open and honest as we can be speaking with a Paradox, please return the favour."

Harry nodded "I am Potter, Hadrian James along with a few other Lordships and a potential Dukedom."

The introductions had been made and now discussions could begin. "Harry, you want to tell me why your magical signature is quite literally all over the shop? You reek of Dragon, Werewolf, Phoenix, Ancient Magic and Basilisk?" Asked Azazael, curiosity of both being a scientist and being the Fallen Angel of Justice.

"I got bit by a Basilisk when I was twelve, the wound was cried in by a Phoenix, got bitten by a werewolf but that's changed. Ancient Magic because my ancestors were tangled up in something known as the 'Britannia Matter' and as for Dragon…this. Acceleration Gear: Balance Break!"

The Devils and the Fallen watched as Harry shifted into his Balance Breaker form and shifted back "Well…shit, that's new. That's very new…Fuck, you said your Family was the Potter family?" Serafall said, bouncing up and down.

"Yeah."

"Harry, you're a definite wild card. We wanted to find out why you killed Raynare…The Fallen Angel."

"She killed Hyodou Issei because a Red Dragonlike Gauntlet appeared on his arm."

"You are certain that is was red?"

"Yes…Brighter than the one I have…My Gauntlet said that it originally belonged to the one that Issei has…Something called the Boosted Gear?"

"Well…shit. My little Rias has the Boosted Gear…Harry, I have a favour to ask." Sirzechs said.

"What is it?"

"As one of the Mao, I cannot deliberately interfere in my sister's problems; but as a Mao I can give her a chance in a Rating Game. I would like you to do your best to get my sister out of her predicament."

"Question or two. What is a Rating Game? Who's the opponent? Are there any rules? Furthermore, will I need to ditch my humanity? Will I be able to fight?"

"Familiar with Chess?" Asked Ajuka, seeing Harry nod "Devil Chess aside from the fact we put ourselves and our peerages, servants for a better term, into the fight. You have Eight Pawns, Two Knights, Two Bishops, Two Rooks and a Queen. The King piece typically belongs to the Devil in charge. Although not all pieces are made equal. There is also the route of Contracted Magician."

Harry began to smirk "Magicians are not typically entered into these things, are they?"

Ajuka nodded "You'll not be the first human in the game, but you'll be the first Contracted Magician."

Harry nodded bowed "I need to find one Rias Gremory."

(Occult Research Club/OCR)

Rias had assembled her peerage as a white seal, tinged in red materialised and out of it appeared the most gorgeous woman, Issei had ever seen. "That's Grayfia Lucifuge, wife of Sirzechs Lucifer. She acts as his intermediary, voice and the manifestation of his will. She's also the strongest queen of Hell and even the Silver-Haired Queen of Annihilation." Kiba said as he swiftly peanutted Issei's tie.

"Aye, Kiba."

Rias's peerage watched as the interaction between Rias and Grayfia quickly began to escalate, only to be broken when a knock was heard. "Enter!"

The door swung open and Rias along with Grayfia flared power into their hands as a newcomer walked in. "Talk about a catfight…Drop the power flaring stunt ladies, the constipation look doesn't suit you and your hair isn't turning gold. Which one of you good ladies is Rias Gremory?"

Rias dismissed her power of destruction "I am. Why? Who are you? Why do you want to know? Who sent you?"

"Answers will come. You must be Grayfia Lucifuge? Your Lord Husband sent me…I was in a meeting with him and a few others about my actions." The stranger replied.

"It's you! You were there when I got stabbed! You were the one with burning sword! Timing could be better though!"

"Hyodou Issei…I dealt with that Fallen and kept her from killing you. You were DYING, not DEAD. You owe me, for the fact you managed to summon Rias. As for me owing you, your second wind is because of me. Got it?"

Issei nodded, the stranger then turned to Grayfia "Is there anything, Lady Lucifuge? Lady Lucifer? Lady Gremory?"

"Please call me Lucifuge. Mao Lucifer is an incumbent only title, the true titles of mine would either be Lucifuge-Gremory, Gremory or Lucifuge. Our introductions have been given and you are?"

As she asked another sigil appeared heralded by a call of a Phoenix.

(Hogwarts)

Fawkes cocked his head, he felt his not-son in the presence of a mocking phoenix. Fawkes chirped, and his power swelled and in a swirl of fire and a true phoenix song the power vanished, hurtling across the world bypassing barriers and shields to slam into Harry.

(OCR)

Harry had to constrain his power. This upstart had already earned his displeasure "Rias, I'm Harry, I'm the one who you wanted to speak to when Issei was dying. Now, who is this one."

"Riser Phenex…"

"Riser Phoenix?"

"No, Phenex…powers similar to a Phoenix and my betrothed."

Harry growled "Name Sirzechs mean anything?"

"Brother, why?" Rias replied not truly paying attention to the question.

"Will you accept my help, to beat this…Phenex. I already hate him, the name feels too similar to Phoenix and I know a Phoenix." Harry replied as Fragarach appeared in his hand and he ambled over to a luxiourous sofa, creating a towel and some rags whilst pulling out oil and a whetstone.

Riser Phenex was a very tall, and relatively imposing character. Towering over most of the people in the room. Although from Harry's point of view, he had nothing going for him aside from his good taste in clothing but aside from the incredible jacket, shirt and trouser apparel the mountain of jewellery made him more of a peacock than anything. "Ah, my darling Rias. Riser notices you are growing even more beautiful with every meeting."

"Riser, it is good to see you again…Would you like some tea?"

Soon enough stability sort of resumed. Unfortunately, Riser kept referring to himself in third person "Rias, you have to marry this third person speaking turkey? Riser, is it? Pack it in. You sound like a cardboard cutout of a villain and the only people to refer to themselves in third person are the following: assholes or obscenely powerful."

Riser's eyes flashed "Who is this insignificant creature who thinks he can badmouth Riser? Riser thinks he should him, the difference between Riser's and his power."

Harry grinned. He had the turkey's attention. Everyone was sweating bricks at Riser's increase in power "Rias, is the air coolant broken? Because I'm getting a lot of hot air over here."

"You insignificant worm. You dare to badmouth Riser…"

"Be careful puppy, don't throw gauntlets down that could be picked up. Besides Riser, you're what? Third son? Second son? Heir? Where do you stand in the pecking order in all of this?"

Riser stopped, this newcomer was egging him on. He wasn't sure of what was going to happen but it didn't matter "Riser is the third son, of the Marquis Phenex and the Marquis ranks above the Dukedom of Gremory."

Rias bristled as did Grayfia, however Harry sliced reality open with his finger and pulled out a book "This is the Ars Goetia, the most accurate and self-updating book on Devils and Demons…Care to wager, Riser?"

"Get on with it worthless Devil. Riser cares not for your impetuousness."

"20th Duke Gremory, 26 Legions under his command, the past, the future and present diviner, knower of hidden treasures and collects maidens young and old. Speciality is teleportation and if done correctly time travel…8th Marquis Phenex 20 Legions and a Devil of Science, Poetry and the go to Devil when summoned. Powers of Pyromancy, Airomancy and Healing…Yes Marquis Phenex has something going for him, but still the Heiress of House Gremory should be betrothed to someone of equal or greater status."

Riser lost his composure, a with that he formed another seal "Riser thinks you should know your place when it comes to greater status."

As Riser's Harem entered the OCR, Harry looked with disinterest and even raised his eyebrow "Okay…Is this meant to impress me or try and get me to think with my balls? Because, you merely look like the biggest…is that your sister?"

"Yes, Riser has his beloved sister Ravel as a member of his peerage." Everyone stared as Harry, who had remained unphased began to cackle and howl at the hilarity of the situation.

"Riser…you not only tried to impress me with your harem and get me to lose control over my libido, but you failed due to the fact that you've got your kid sister in your harem…"

"It's a peerage! Ravel and everyone here should feel privileged to see Riser's full peerage."

"I wasn't finished you petty, primitive, incestuous pimp. That's all you are. You don't deserve Rias; hell no-one deserves Rias save for the person Rias likes…I'm bored of pontificating and winding you up, so I'll break protocol, so you want Rias and her peerage…She says no. So, Mao Lucifer has decreed that Rias Gremory shall fight it out with Riser Phenex in a rating game."

Rias was quick to accept and back Harry's words up and eventually both Grayfia and Riser left but Riser shouted something "Riser expects no interference from an unaffiliated mage."

"Rias, I'm willing to become your mage if you allow me a chance fillet that prick."

Rias grinned "Not wanting to become a member of my peerage?"

"I doubt you've got enough pieces to allow me to legitimately become a member of your peerage. However, we can get around it if I become Rias Gremory's Peerage Magician and not a House Gremory Magician assigned to Rias Gremory. It'll mean you, Rias have access to my…debilitating arsenal of tricks and not your family. Only for this fight."

"What do you want in return?"

"I get a chance to fight and get a date with your Queen." Akeno's eyes widened and glittered at the abruptness.

"Oh, the mage thinks he do this."

"The mage, as you so bluntly stated, Himejima-san, is arguably the most dangerous occupant of this room." Harry replied with a grin, soon enough the joking had subsided.

"How long do we have for training and preparation?"

"Three Months."

Harry smirked "That pillock…Given me too damn long…Rest assured Lady Gremory, Riser is in for a really, really bad day."

Rias nodded "My thanks, Harry…How will we contact you if we need you?"

"Talk to the Council President."