This story is going to be based on the anime version of High School DXD, because I cannot obtain or read the manga. As such, this will update, at most, as does the anime. Although it will likely take a while to get to the point the anime is in currently, and if I can I will update based on the manga if I can find it. Harry will be paired with Asia, his personality will be a bit... broken. He will not be evil, but neither will he be a nigh-perfect angle sort of person. While he will be paired with Asia, you can give suggestions for up to three other people in addition. Also, the cliche of 'Potter luck', will be made into a sacred gear! Now let's get on with the story!
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Summary: The Potter family was a family with roots in the Devil race, and one of the 72 pillars thought extinct, Foras. However, their blood was diluted, only popping up in a single person every few wizard generations, which can be a very long time and they are considered half devil. Every time it does come up, the one it happens with will not be able to use a wand, normally. Their bloodline possesses a rare sacred gear, the only known descendant type, named so as it effects their descendants even if they do not posses it. They can both occur to the same person, but this is the story of the second known time.
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Harry James Potter, now Haru Foras, was tired. Tired of the flipping attitudes of the wizarding world, the prejudice, the newspaper and everything else. He had gone to the goblins to see if he could leave, and was brought to a specific area at spear point. He was told of the specialties in his bloodline, he was told of the reality of the biblical faction, along with the possibility of going to japan to go to the Kouh area, which was overseen by two heiresses of different families of the remaining 33 families of the 72 pillars. When he was told of this, he asked to change his name to be Japanese, but still similar to his own, along with his other family name of Foras.
He then went to a ritual room while asleep (the shock of the revelations really took it out of him), where several bindings that had been placed on him and his powers as a half-devil, along with his actual appearance, which had been placed on him by several people were removed. That had destroyed his wand when he tried to use it, much to his dismay. It turned out the devils in his family weren't normally able to use wands due to the amount power they channel to such a small area. Part of those bindings were on his magic, not allowing him to use much of it and thinning out what he could.
Afterward he left to go to a shop in Nocturne Ally run by a muggleborn, where he was able to buy the knowledge he needed to go to the equivalent of his year at the school at Kouh. Going back(?) to his devil form had changed his appearance, and healed all the wounds on his body. Now he was at the height he should be. His hair, which had always been black, now instead looked like a black hole sitting on his head. He had a healthier skin tone now, and changed his outfit into casual, 'muggle' clothes.
Right then he was messing with the two twenty sided dice that were the manifestation of his families sacred gear, called Contradicted Luck, while flying to Japan on a plane. It is exactly what it sounds like, and is the reason for the weird luck that always follows the Potter Family. It only manifests in a random few generations, and only once before along with the devil wings, of which he started out with four. His manifestation of the sacred gear was a subspecies, giving him very minor control of the luck of people and objects around him instead of just himself. It is supposed to have a balance breaker, but since his is a subspecies it is not guarantied, or it might be entirely different from the usual. It could also be considered a Longinus, depending on how well he can eventually use it. Seriously, he could affect that luck so someone is killed in the strangest way.
He could have used an international portkey, but that would alert the ministry to what he was doing. And he just didn't like normal ones, and international ones are supposed to be much worse. He really wanted to find out how to make those teleportation circles, but there wasn't anyone around that could teach him. He didn't have to continue his magical schooling anymore, but there will likely be a lot of people trying to stop him from leaving. Anyway, he had bought a small apartment within walking distance of the school, and now he just had to wait for the plane to land.
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When he arrived, he just went to the apartment as soon as he could. When there, he did what would be expected of him for as long as he was living there, then fell on the bed and fell asleep. He was tired, and his internal clock needed to adjust to the time zone he was living in. Thankfully, he had most of the summer to adjust to where he was now living. Although it would be a good idea to meet the devils in charge of the area before school started. Either way, he would wake up tomorrow and explore the area he was now living in.
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He woke up at roughly 7am, and started on breakfast. While it was cooking, he set up and bound an undetectable expansion charm to the apartment. He found the food in japan much easier to eat then the food given at Hogwarts. After, he did as he said and walked around asking directions from the people he met along the way for areas he would go to most often. Along the way, he met several of the devils living in the town, including the kings, although they seemed to not know what to make of him. It didn't really matter, he had already decided to meet with them after he finished walking around. For some reason, the kings lived in the school while the others lived in their own places when not called to their respective meeting areas. He had given both of them messages to meet at the school from, 'the newest in town'. We will see if they accept soon.
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Ms. Sitri cut right to the chase. "Why did you call us here? You have a reason."
Haru just nodded. "You are correct. But can't I just meet the other devils in the town?" as he said this, four devil wings came out of his back. "Although I am very strange for any devil, being to wield this, even if I don't know how to use it." he summoned the sword of Godric Gryffindor to him. This time, it was in a very beautiful sheath. They where about to comment on it, before they felt the power coming off of it. He then dismissed it back to where it is when not in use.
"W-what was that? How are you holding a holy sword of that level and not already dead?!" they practically shouted at him in shock.
Haru smirked as he explained, "That was the sword of Godric Gryffindor, even if that is not the real name of the blade. Let's just say it's special and leave it at that for now." The others there were astounded. "As for how, that is a secret but it ties into this." he summoned his sacred gear, not that they knew that, and let them look at it for a moment before taking it back into himself.
They all decided not to question him anymore, in order to stop their collective headache from getting worse, if possible. "Any way, I just came here to meet the other devils, and how strange is that to say, and inform you I will be a student at this school next year. Also I wanted to ask if any of you will be willing to teach me how to use the sword. Last time I used it, all I knew how to do was just stab it into the mouth of that dame basilisk." they all decided to just not ask about that and move on. "I also don't know how to use any of the magic that devils use. I would like to ask about that. Oh, I never introduced myself, did I? My name is Haru Foras, nice to meet you." that started Ms. Gremory and Ms. Sitri. This was another of the 72 pillars, and one thought extinct at that!
"Well, any of our knights could teach you how to use a sword. If you want to learn how to train your magic, ask any of our Queens or bishops." Rias-san answered a bit distantly. Understandable, considering all that she had been told.
"Great! If that's all, I will take my leave now. Goodbye." with that said, along with a smile, he left.
Everyone left were all very confused, shocked, and anything else you can think of to describe them right then. They had just seen the newest devil in town, Haru Foras. One that somehow held the real Excalibur without being killed, and part of a extinct family of the 72 pillars. Eventually they all shook out of their collective daze and left, wondering how much would change in the coming school year.
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"Hello, my name is Haru Foras. (Please insert greeting of your choice, as I do not know what is acceptable for Japan.)" he then went to sit where the teacher instructed him to... which was apparently by a kid name Issei Hyoudo that felt a bit strange to his senses. A bit like the dragon he faced two years ago, but different along with the feel of being a normal human unlike the feel of the devils in the area.
The classes over the day seemed like he normally took in primary school, although a lot harder considering it was for much older kids than back then. He had met the perverted trio and they took an instant dislike for him. And based that dislike over being a, as they called it, another 'bastard pretty-boy', in their words. Although Hyoudo-san seemed less, extreme than his friends. Either way, he will be meeting with both of the devil groups again after school.
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"Wait, Hyoudo-san actually got a girlfriend?" Haru asked incredulously.
"Yes, although it is just a fallen angle pretending for some reason. Unfortunately, we do not have grounds to try and stop her. We do not know if she will try to kill him, and even if that is that is the likely outcome we cant do anything without risking war. If she does kill him, one of us is going to reincarnate him into a devil so at least he won't stay dead. Also, we cannot reveal the supernatural to humans, at least ones who don't know about it already, and after a while our memory erasure spell will not work." Rias-san answered him grimly.
"That, doesn't sit right with me." Haru commented. "I can accept that, barely, and I think that is only because finding out I am a devil changed how I think somewhat. There's also that." he gestured in the direction of what looked like a clone of himself. It was really a split personality of his, given a body created by magic. The split had formed during the time he had lived at the Dursleys, to protect him. His different personality's were kind-of based off the characteristics of the founders, and called themselves by the ones they resembled the most. The one normally in contact with others was his 'Gryffindor', the collection of his general Gryffindor traits and Hufflpuff-esc friendliness. The other, his 'Slytherin' was his general Slytherin traits and Ravenclaw thirst for knowledge. Good for him, the body created by magic can interact with things and when they re-merge anything learned, read and even training completed by the split was transferred to the collective mind and body of both of them. It is the ultimate form of multitasking, but it has drawbacks too. Those are fairly obvious and easy to figure out. So, after learning all of that it was understandable that he was more open minded. "But I have been told I have a saving people thing and that part really wants me to save him."
"You know, all of us are having a hard time believing all of the things that happen around you. You have proof but it all just seems like something you would only believe would happen in a book. Or on T.V. Either way, it's just strange." unknown to her, it would be even more unbelievable if he had told her of the other three years he had spent in Hogwarts. He had only told her of the first two and what he did this summer. He wasn't going to reveal everything after only a few days.
"Let's wait and see what happens. We'll find out when it happens, and if it does he will be asking questions about her. No one will remember and think him crazy, so I'll inform him of what happened. You would be likely to not even tell him until he gets caught again, and Sona won't care much unless she is the one to reincarnate him." Rias just nodded along to that.
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Now, several things. No, Haru will not be OP. His sacred gear has that potential, but he prefers not to use it. He will be using his own skills when possible. His physical abilitys, which used to be very high for a normal civilian due to his relatives, have been upgraded to the level of a mid-to-high rooks and knights. Although he is not trained so even a medium level of either will be able to beat him in a battle of their type most of the time. Most of the benefits he has, like his nigh-immunity to light, sacred gear and his sword, are earned by his first fifteen years of life and all the stuff that went wrong for him. Abuse and neglect from the Dursleys, the stone adventure, the basilisk, the entire third year, the tri-wizard tournament, and Deloris Umbridge. Also, the split personality can be as much of a curse as a blessing. The pairing makes sense to me, Asia is an extraordinarily kind person, and so is Haru, along with him doing anything for the people he considers his friends.
Edit: I have changed some things, mostly just taking out the actual name of his sword and... actually that's pretty much it. I only changed a few things on that one paragraph. Anyway, I discovered I wanted him to reveal his swords name later on, if you read some of the reviews it should be obvious, to surprise the others and readers who haven't read the reviews. That's it, just wanted to say sorry for the wait but I only write because I like to and, like most of you if you somehow found this story, I love to read other stories on here and forgot I had an account.