Custodian

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

VI: Pre-prep for plucking petulant Phenex's

(Harry)

Harry arrived home to find Four People waiting for him. He picked out Sirius and Remus with ease "You, have me at a disadvantage Sirius, Uncle."

Sirius smirked "I've been investigating the Black Family holdings and discovered that we have in essence a contract extending for as long as Black Blood is on the Earth with a bloke by the name of Sirzechs Gremory?"

Harry paled, he hoped he and Sirius were not talking about the same person; causing one of the strangers to let out a whole and hearty rumble of laughter "You are indeed, Young Potter. You have some powerful wards up so let me introduce myself Samuel Liddell MacGregor Mathers; Master Mage; Master Bishop of His Highness Sirzechs Lucifer; Co-Founder of the Hermatic Order of the Golden Dawn; Practitioner of the Prohibited Magics of White, Black, Norse, Summoning and Fae…And willing to train you Hadrian James Potter; Custodian of the Britannia Arsenal; Dragon Champion and Personal Pact Magician of her Grace, the Lady Rias Gremory."

Remus fixed Harry in the eye with a gleam that came from his Inner Werewolf "Something you have to explain? Running into the Inhabitants of Hell and the Forces of the Grigori?"

"An Idiotic Innocent Civilian Pervert with a Sacred Gear and a Girl…Rather the Girl is a Nephilim. The Nephilim, I met through a Kohai-Sampai meeting her names Himejima Akeno…According to 'Cel, her Father's the Fallen Angel of Lightning."

MacGregor snorted "His Grace the Duke of Gremory's adopted daughter, Master Sirzechs's and Lady Rias's surrogate sister…You have how long before your match against the Phenex brat?"

"3 Months…"

MacGregor nodded "Forgive me Souji-san, this is Okita Souji; Sirzechs Knight; Master Knight, Captain of the first Shinsengumi Unit and Knight-at-Arms for Sirzechs immediate family and House Gremory's Master-Of-Arms."

Harry bowed to them "Pleasure to meet the pair of you…Are you both offering to train me for 3 Months?"

Souji grinned "He's a sharp one…We are; however you will not have time to learn much from us in three months."

Harry grinned "I have a Time-dilation ritual spell and access to a device that allows us to rewind time."

MacGregor's eyes narrowed "You're not Mage are you? You're a wizard…That's why the name's Potter and Black sounded familiar." MacGregor turned to Sirius "The House Gremory has a contract with the Wizarding Family of Black…A member of the excommunicated faction of the Supernatural?"

That surprised the mortal participants in the house "Excommunicated! What happened?"

"Your ancestors found a way to target the Soul! Something that even the Citizens of the Underworld…Not Hell, same place but different regent. Daemons, Marids, Afrits, Djinni, Foliot and Imps reside in Hell. Devils reside in the Underworld…Think of us as un-welcome next-door neighbours." Matthews explained.

"Some how Matthews-san, Wizards being excommunicated does not surprise me. If you both with to call this contract over, then please do so." Harry retorted before bowing lowly to them.

"We'll train you. I managed to re-create what happened alongside Leviathan-dono's Queen and Bishops, anyway Souji saw your wielding of a sword as offensive and tagged along."

Harry grinned "Let's get started. Shall we make it nine months? The real-time three months lengthened into nine? The days will just feel longer than normal."

"I like the sound of this idea. I would suggest we perform it down in the Underworld as Time down there is also much more mutable."

Sirius nodded "I want tickets to the match."

"That can be arranged…Even if I need to pressure Our Queen into making Master Sirzechs into doing it."

With that Harry stepped into a Red sigil of House Gremory and teleported away.

(Rias et al.)

"Akeno, you haven't been able to find Harry anywhere?" Asked Rias, she had sent Akeno to get her Contract Magician; so they could plan and sort out a training regime for him.

The Nephilim looked at her sister figure "Yes, Rias…I've not sensed him anywhere in Kuoh. I did manage to find his guardian and they did say Harry would be back in three months."

Rias pursed her lips. She hadn't gone home for fear of meeting Riser in her home, she let out a sigh "Never mind, I…think I know who has Harry."

Meanwhile Kiba and Koneko were having the times of their lives, more Koneko than Kiba, they helping Issei boost his magical power and physical power. Specifically, beating him into a pulp.

So far, it had only been one day and Issei was already improving. Rias hadn't informed Issei of the fact that he had taken up all of her Pawn pieces. The thought rose, but she quickly dismissed it, it would be detrimental. "Rias, it might be detrimental but it might be beneficial. Issei has a lot of power, as does Harry-kun. Remember how Harry acted around you."

"He didn't react well to being mis-directed or being fed partial answers. Then again Harry's older than nearly all of my peerage and he has experiences and experience to possibly deal with us." Rias responded causing Akeno to giggle slightly.

"All seriousness aside; although I'd love to see him in the bedroom. It was better to deal with it head-on, I suggest doing that with Issei." With that Akeno, clothes shifting into that of her Temple Maiden attire, sprouted her wings and began to train.

However, as she began to train the thought of Rias's Pact Magician wormed its way into her head. The way he had sized everyone up and down, his eyes not completely noticing but at the same time noticing. The raw raging power that seemed so delicately controlled and manipulated. When he looked at her; Akeno felt herself shudder and thunder magic she had summoned boomed erratically…He seemed to know exactly what she was.

She shook her head, maybe…maybe it was time to learn the basics of her Father's power. As she contemplated it a quote from an Anime that Rias watched, but stopped due to the amount of 'Filler Arcs' "Begone with the Thunderclap." Akeno giggled to herself and concentrated, thunder boomed and lightning roared, she pointed at a mannequin set up for Kiba "Become one with the lightning!"

The lightning roared from the circle of magic she formed and three tendrils erupted, none of them hit the target directly but they managed to hit it. Kiba looked and his face blanched; causing Akeno to giggle.

"DRAGON SHOT!" Shouted Issei as he activated his Gear. Only Rias knew exactly how strong Issei was going to be. She needed to address this right now.

"Koneko, I need to talk with Issei."

Koneko nodded "He's an utter perv, but he works hard."

Issei was drenched in sweat looking dejectedly at the Gauntlet on his arm "How's it going?"

Issei looked up "President! Er well, superb in fact."

Rias's mouth twitched upwards into a wry smirk, something that Issei had noticed plenty of times on Harry's face. "Walk with me…I need to explain on somethings to you."

Issei gulped, he nodded and followed "Issei, when I resurrected you, I told you I used a pawn piece on you."

Issei nodded "I get it I'm the lowest on the pecking order. The general dogsbody."

"No. It's not that. There are eight pawns in chess, Issei and you're my sole pawn."

Issei stopped "Either that means you've found no-one to join me as your pawn or I'm the only one. If I am the only one; why wasn't I told earlier…" Issei trailed off.

Rias stopped "Because, I wasn't sure of my own strength and if I'd be able to help you control it effectively. I have a Bishop who can't control his power. I've limited the amount of…"

Issei's long fuse ignited and a powerful crimson aura erupted into existence around him, amongst the red sparks were green ones as his natural magical pool began to expand. Rias stood her ground and began to remove the seals that she had placed around Issei that effectively sealed off his power. As they dropped, Issei's power only grew. Suddenly everything went black.

(Mindscape)

Issei found himself surrounded by a cacophony of voices all of them illegible but slowly becoming more and more legible. Suddenly another voice virtually rumbled and drowned out every other noise.

"Kid, calm down…I get it; I dislike it but we needed it. Furthermore, it's about time we met."

"Who are you?"

"I'm Ddraig; the Red Dragon Emperor; Y Ddraig Goch…The Dragon the Nation of Wales Flag?"

Issei stopped "Okay, why me?"

"That I don't know. But what I do know is Partner; You need to get over this pity-party. Harry Potter; wielder of my unnamed Son has got the gist of us…We're only as strong as each other. Rias Gremory, did what she thought was right, we now have three months to get much stronger. It will be tough but it can be done."

"Yes. I won't let you down."

(End Mindscape)

Issei woke up and with difficulty pulled his rampant power back. Rias's jaw dropped, when Issei had fully let loose he had revealed his power in the form of four more pairs of black spectral wings. Issei's power hadn't fully manifested nor had he come into his potential as of yet. However, the raw power he was radiating meant he was going to be an extremely powerful devil.

"Rias…Let's do it." Rias looked at her Pawn with a grin that matched her stereotyped beauty.

"Yes…Riser; won't know what him."

(Phenex compound)

Everything at the Phenex compound seemed quiet. Because everything was, Riser was currently still abed with a member of his peerage and the rest of said peerage were only performing the mildest amount of training possible.

"Lord Riser said to us not to train too hard for no matter how much time, Rias's Peerage have, three months is not enough to even the scales." Yubelluna instructed receiving filthy looks from Karlamine and Siris.

"Yubelluna, you and I both know…"

Yubelluna nodded "I tried to raise my concerns but you know how Lord Riser is."

However, Ni and Li; Riser's first ever pieces considering they were vessels of the Phenex family shivered in delight "Riser-sama is so good."

Samael Phenex touched the wards and sighed, it seemed his youngest son needed a check humility. If anyone brought the subject up; he would admit that he wanted to tie his family to the Gremory Household, a very talented and powerful daughter, Mao Lucifer was of that family originally.

"I do share Riser's thoughts, My Lord Husband." Samael turned to find his former Queen and now Wife; Lillith Phenex-nee-Shax, The Family of Shax had the power of illusions something that Raga Phenex the second son had taken up an interest in.

Raga was a formidable Rating Gamer, his mastery over his matriarchally inherited powers, allowed him to create the illusion of him flying high in the air and dropping powerful fire blasts when in fact that it was his bishop. Raga was one of the few Gamers not play without a full peerage and even fewer to play without a Queen piece. His peerage consisted of: two Bishops, one Knight, two Rooks and three Pawns, as for a Queen Raga had a pact with Ruvel, his elder brother, to let him ask permission to borrow Ruvel's own queen.

"Lillith, please…" Protested Samael.

Lillith grinned impishly, she knew her husband was right about the unspoken fact that Riser was not training due to his experience in the rating game. She however was close friend with the Matriarch of the Gremory House. "Rias has snagged herself some interesting players."

Samael cocked his head and put his pen down. Lillith had his attention "And…?"

"I've heard that Lady Rias has finally gotten her pawn and he's a POWERFUL pawn; furthermore she's managed to get her hands on a personal Contracted Magician, not important in it's own right but…I definitely overheard Matthers, was getting involved and we all know who his King is."

Samael chuckled "That is interesting…but suicidal for Lady Rias…Contracted Magicians unless made into a Devil; I don't think any have entered a Rating Game…Therefore…"

The Lord and Lady Phenex nodded "This Magician is the most dangerous one of the lot, as we have no idea what he has planned."

(Time Skip 3rd month, three days before the Game)

At Rias's training ground a dark red seal erupted and Harry rose out of the ground as Issei fired off a 'Dragon Shot'. Rias's eyes widened, her Magician was going to be unable to fight.

Everyone watched in horror and then amazement as Harry almost casually flicked his wrists, made a few hand gestures and an electric green circle of magic appeared and he caught the energy blast. "This an area effect or a pinpoint, Issei?"

"Pinpoint…Why?"

"Dear, Hyoudou Issei return to sender. Regards, Potter Harry." Harry replied thrusting the energy blast back with a little bit of added interest. Issei wasn't able to dodge it but managed to slam the energy away with the now fully formed Boosted Gear.

"That wasn't the warming gift I'd expected. Sorry I'm so late…The past Eight Months and Twenty-Seven Days have been long."

"But we've only had three?" Said Kiba cocking an eyebrow.

"The more powerful the Practitioner, the stupider the shenanigans Kiba-chan and I'm not anything to be sniffed at considering Mao Lucifer's Master Bishop taught me."

"You spent eight months in three, training under MacGregor!"

"And his Knight."

Kiba raised an eyebrow "Souji-sensei, deemed me a threat to myself when I showed him my killing of Raynare…Twenty to Twenty-two hour days training with the pair of them. Let's just say, I've learnt a lot and enough as did MacGregor. Anyway, shall we train? Although, I do need to head to pick up a costume or three."

Rias cocked her head "Why?"

Harry shifted his feet slightly "I may or may not have found a car…"

"Anime. The term is Anime."

"an…anime that I kinda like."

Rias grinned "What was it?"

"Hellsing…or Hellsing Ultimate…I'm not sure of the difference."

"Hellsing finished in 2003 and ran for 13 episodes with everything after Episode 7 being unscripted and the reviews were mixed. Ultimate turned the 13 episodes into 10 much better ones. A good choice."

Harry smirked "Anyway, I just need to grab a customised costumes." With that he vanished with a pop; and returned not long later, bags laden down.

Rias was immediately as curious as a cat "Rias, later…One must always look their best before going into a fight. So, relax, we've have this…Even if Riser pulls out all the stops, I have a counter-measure for him."

Rias nodded "Please, at least allow me to show you around and show you to your room."

The room was empty of decoration, it was on the Ground Floor next to the staircase into the basement. Inside the room was a wonderful looking Four Poster Bed in cherry oak with a matching chest at the bottom and a desk with a winged-back chair. "It's basic…I'm afraid and due to getting off on the wrong foot…"

Harry grinned and deposited his bags, reached into his pocket and pulled out several more "Rias; it's wonderful. It's how I am, rough childhood means for me the simpler things are best; when I was staying at your residence in the Underworld, I had to fight off your mother and father in protest saying I wanted something simple and not overly grandiose. They accepted on the condition that I help you out to the very utmost of my ability. I did notice a young boy…"

Rias giggled "That's Millicas, my nephew. He's not a Lucifer, that title…"

"Is now less of an inheritance and more of a mantle. I get it. I've met Lucifer, Beelzebub and Leviathan…Nice people."

Rias snorted "I bet Leviathan was all over you."

"Yes she was, due to a rather mouthy blonde but not how you'd expect. She ordered me to 'Release her sister's dragon, you fiend'. I complied by banishing him into the Student Council."

Rias sighed "I have a feeling I'll not be able to take you anywhere…" She stopped as she brought up the Hellsing cast "Please tell me you have an Alucard cosplay…"

The grin reminded her too much of the Master Vampire. "Anyway, I'll show you the basement so you can set up your potions supplies, then I'm expecting you to join us for dinner. I'm expecting Sona and her Peerage."

"Sona is the Heiress of the Sitri family…Elder sister is Leviathan…Just checking. Anyone else I need to worry about?"

"No, although Beelzebub used to be of the Astorath Family and used to be a candidate for Heir."

Harry descended the stair, lighting his hand up to see and he appeared ten minutes later as Rias heard the sound of bags opening, shelves thumping and jars clinking and clanking.

Harry, climbed out of the basement and after changing into something less worn out i.e. black skinny jeans and baggy t-shirt that had a married couple tied together by a ball and chain with the caption 'Game Over' adorned, headed to eat.

"Damn, Harry…Are you normally this savage?" Issei asked spying the T-shirt.

"Only Monday to Friday. Weekends I'm worse…Whose the nun?"

"Ohayo, I'm Asia Argento." Asia said her name 'As zee ia' instead of like the continent.

"Huh, so how'd a pretty thing like you end up falling from the Grace of God and become a Devil? I'm curious, quite literally curiosity killed my owl…actually no, that was Terrorists but still. Never a cat owner, was a bird owner so curiosity killed the owl."

"It's a bit of sad one." Asia replied looking down.

"Don't worry, I'm a sucker for a sad story…story of well…me, actually. Tell you what, tell me yours and I'll tell you mine."

Asia blushed "I was able to heal, like with a touch…As I was raised by the church; I rose quite high and quickly as a result I'm still a little naïve. I ended up healing someone who turned out to be a Devil; I was declared excommunicate after that and sent here. My Sacred Gear 'Twilight Healing' was extracted from me and I well died, Rias brought me back."

Harry's mind was reeling "Rias Gremory, just how many Sacred Gears have you got in your peerage?"

"Well, Kiba has Blade Blacksmith, Issei has his Twice…" As Issei blurted out "Boosted Gear."

Harry snorted, however Rias resumed her briefing "Boosted Gear and Asia has Twilight Healing."

"Three in total…One Thirteen Class, One Desired and a Common…Not a bad haul. Not a bad haul at all."

"And you? From what I've seen is incompetence." Koneko questioned.

"Sounds like something a Doctor needs to have a look at. As for me? A temper, power and a certain distain for those who call themselves immortal."

"The Phenex Family has immortality and high powered regeneration making them extremely annoying foes to face." Came the voice of Sona Sitri.

Harry giggled "Then clearly whoever's fought them are idiots. You can't have immortality and regeneration…Believe me, I killed a man who said he had both. Regeneration is a bitch but hit the asshole repeatedly, hit him in the head, the genetalia, up the ass…hit him in the pain areas and his reserves drain from the beating. Immortality…not really a thing. Long-ass longevity where aging slows to a glacial pace that's a thing. Immune from the effects of time, a thing. Immunity from disease that's also a thing. When in doubt hit them in the head and make your play from there…Is that satisfactory Rias? Sitri-san?"

Sona pushed her glasses up "Correct for the most part…Although I'd like to see you fight my sisters peerage."

"Give me considerate terms and I'll do it, give me good terms and I might alter my state of dress."

"If Sona-buchou gives you terms you can't refuse?" Asked Tsubaki; Sona's Vice President and Queen.

"I'll do it nude as the day I was born…In fact…I might do that during the Riser match."

Everyone stared at him "You'd fight him in the nude! Do you have no propriety?" Someone called out.

"What? You're devils! I'm pretty sure you were all born naked, what has anyone got to be worried about? I'm contracted into a Peerage where the majority are women and it doesn't help that they have amazing figures and one of my few male colleagues is an open horn-dog who really needs to curb it or be neutered…Or is it because you Pure-blooded devils are so shy in the face of pure promiscuity that you're jealous you can't do it yourselves?"

There was a jovial silence as it appeared all the Devils were enjoying the banter before Rias clapped her hands "Everyone lets seat and eat and ask my Pact Mage questions about his life."

Akeno looked Harry in the eye, hers smouldering with intent "You promised us a tragic story. 'Tell me yours, and I'll tell you mine?'"

"That I did…" Harry grabbed a stein of something that looked vaguely alcoholic "To the Pre-preparations of Plucking a Petulant Phenex."

"To the Plucking of a Petulant Phenex." Came the reply from Rias's peerage.

"To the glory of a good show." Announced Sona.