Prologue

AN: This story has not only High School DxD and Fate/Stay Night, but Freezing and small elements from different anime. I don't them, but the story and OC I made. Now enjoy the story.

Rebirth was a funny thing and a lot has happened to me during my stay in this new world that I never thought was out there and real. But here I am, living in the word of High School DxD the anime/manga that I watched in my old home. My old home or world had no happy thoughts or memories to think about. I never felt home there, but here I happen to feel alive and at home.

"Home is where the heart is. And I believe that. My heart has found a home to be happy with and to find what I have been missing," I said in thought with a smile on my face.

I think should introduce myself before going any deeper.

My name is Ren Arc-Gremory, yes Gremory and will explain that soon enough. I am nineteen years old with white hair that has red tips and purple eyes. I wore a black jacket, blue shirt, jeans, and black half pair of boots. And yes, I am a Devil which follows into my last name, well adoptive name that is.

Eleven years ago, I came into this new world after losing my life in the past life and become a Half-Devil with silver bat-like wings. I also happen to be the descendant of Sir Lancelot through my human side while wielding Arondight and the Shield of Camelot.

I never thought I would come into a new world and be a Half-Devil. I first thought I was going crazy but changed when I noticed that I was in the Underworld. I started out living in the poor area of the Underworld, stealing food or money I can get. It wasn't a problem since I grow up on my own, but it changed when my luck ran into Lady Gremory or Venelana Gremory, but now mother.

I wanted to steal from her and did, but I gave her money back and she grateful I did. She asked me why I was doing out in the cold streets alone and I told that I was alone with no one to take care of me. She was taken back and did something that I never thought I would hear in my life. She asked if I wanted to come with her to her household and be adoptive. I cried tears of happens and hugged my new mother as she hugged me back like a mother would.

Venelana or mother brought me back to the Gremory household and told her husband that she adoptive a new member into the Gremory family. At first was scared that Lord Gremory or Zeoticus Gremory would never take me like his wife did. But to my surprise, he ruffled my hair like a father would do to his son and welcome me into the family.

I smiled in remembering the times I spent with my new family and loved them very much. I did meet my new sister, Rias Gremory, older brother Sirzechs Lucifer, and sister-in-law Grayfia Lucifuge. I was grateful and happy that they welcome me into the family. I grown to be a good Pure-Blooded Devil of the house of Gremory.

During the eleven years later, I trained on becoming stronger to fight any threats to the Devils and one day all members Three Faction. I study hard, learning many things and my knowledge over magic grow. And, the work and love for doing music, to the point of performing in the human world and Underworld for many fans, earning the name the Black Ghost.

I did spend time with new family. I love them and always spend time with them when I have chances. I meet Rias's Peerage members as she gained them into her peerage, being her Queen, Knight, Rook, and Bishop. I also heard that she gained new members into her peerage laity and saw her Pawn fighting against Riser Phenex.

I already know what servants she gained in the human world but will act surprise when I see them soon enough. I want my sister to have a strong heart and believe in her peerage that they and her can overcome what challenges that comes at them. They are going to need it and I will help them with that.

Also, I happened to be the Queen of Serafall Leviathan to everyone surprise and Grayfia happiness to work under of the Four Great Satans. I met my King when I turn fifth teen and she grown to love me at first sight which I did as well. I happen to love her in my old world when watching DxD and still do now.

My parents thought that I wanted to have my own peerage or maybe join my sister's peerage, but I told them that I wanted to but wanted to make my own choice to raise from the top and one gain my own peerage. They respected my choice and still were proud of me. My sister wanted me to come with her to the human world and have fun with her and her peerage, but I told that I will visit her when I am free and that I will always love her. She loved me back and walked her own path like I did.

I'm a Mid-Class Devil that rivals come High-Class Devils and still have a way to go to gain my own peerage one day.

Then the sound of a school bell got my attention and out of my thoughts to see that Kuoh Academy was starting or a break was going on. I could go to college here but will join when summer is over and then I will join up for college. I can't wait to see my sister's and friend's face when they see me. My friend…I will explained soon enough and just so happen to see not so from my here.

Sona Sitri, younger sister of my King and the heiress of the Sitri Clan. I happen to know her for a long time now. Rias and I played with her when we were young and had great times. In fact, Sona's mother and my mother were great friends, but had some rival moments like my sister and childhood friend do. So yeah there was that and who knows what will happen.

"Hello Sona-chan," I greeted with a warm smile on my face and waved my right towards my friend.

Sona turn towards me to see who called her but let out a short gasp before walking towards me and soon got faster. She jumped into my arms and wrapped her arms around my body. I smiled and return warp my arms around her. I saw Tsubaki, Sona's Queen, watched us with a smile on her face on seeing her King happy to see me like she was.

I could also can tell that many Kuoh students were shock on what was going and didn't care. Humans never learn, but hey, I was human once and understand the confusion.

"Ren? What are you doing here?" Sona asked, being muffled due to her face being pressed so closely to my shirt.

She pulled her head away to understand and hear me better, but still hugged me though, not that I don't mind.

"Mom and Lady Sitri told me. I was free and around area and so…here I am," I replied with a smile on my face.

"But I though that mission was a long one. I don't want you getting into trouble because of me," Sona responded.

I laugh a little and said, "The mission was taken care of and I was not going to mess my sister and your family day at school."

Sona smiled at me with a small laugh leaving her lips at my laidback personality as I patted her on the top of her head and smiled at her.

Once the hug stopped, I turn my attention towards Tsubaki and smiled at her. Like my sister and some members of her peerage, I met her when Sona got her Evil Piece and used on Tsubaki. I know what the other members, but never met them before and will need to keep the act up.

"Good morning Tsubaki-chan," I greeted with a smile on my face.

"Good morning to you too, Ren. It's good to see you again," Tsubaki greeted back with a smile on her face.

"I'm happy to see you again too Tsubaki-chan. I also will be happier to see the other members of your peerage Sona-chan and my sister's," I replied, knowing who they are, but will like to meet them in person instead of hearing them.

"That can happen but come on Ren. We still have 15 minutes before Tsubaki and I need to be un our homeroom. I'll give you quick tour of the building before catching up with Rias," Sona offered, making a good point.

"Sure Sona-chan. I would like nothing more," I agreed, having Sona and Tsubaki showing me around the school.

As I followed Sona and Tsubaki down the hallway, still having my friend clinging onto my right arm and being happily to drag me around or see me again, maybe both and was fine with it. I saw various classrooms and hallways that honestly looked the same to me. I find it sweet, cute, and adorable at how my friend was so pleased and excited to see me visiting her. I always have time for friends and family any time.

I saw that Tsubaki walked close behind us with a smile on her face form watching us and looked at me with a love look in her eyes. I could tell that she and my King's sisters have a crush on me. That's fine and was fact that Devils have harems. So, no problem and I already have harem, being my King, a leader of the Youkai Faction, other Devils in the Underworld that I train or spend time with, and maybe future members of some other Devils that I know of. I also happen to like strong, cute, and smart girls. Sona and her Queen fit my likings. Sorry Saji and Kiba, but they are going to be with me form the looks of it. Saji is an idiot and would not understand it. Kiba doesn't even know or would care due to his own pride of a swordsmen. So yeah, they're was that, but moving on.

"So what class do you have first Sona-chan?" I asked, getting my friend to look at me with a happy smile on her face.

"I have Home Economics first which I share with Rias, Akeno, and Tsubaki but before that, I have to go to Home Room to register my attendance. Rias and her Queen will be there also," Sona replied while walking with her Queen and I into the hallways.

That's good and I will get to surprise my sister once again for seeing me again.

"Did you know that you and Rias brother is coming today?" Sona asked.

I could guess where this question was going, but oh knows.

"I know. Big brother would not stop talking about for days now and Grayfia will come to keep him in line from his childless actions. And I think father would come too, since he is dose work here after all and have time to spend time with his children," I responded with a small chuckle.

Sona smiled, but changed into a frown and said, "Ren you don't be any chance now if she is coming today do you?"

Knowing what Sona was mentioning and could only laugh at how nervous she looked but stopped to talk her.

"I don't know if she is coming. I don' want any incidents," I replied with a chuckle but earned me a quick swat on the arm from Sona.

"I'm serious. You know what she's like. She'll find a way to embarrass me in front of everyone which I will never be able to live down," Sona said with little red on face from embarrassment from thinking what her older sister would do.

While I may find it cut, but this wasn't the time for it. I sighed and understand that I need to help her out.

"I don't know if she will or will not be here. Me being here was a last minute and I don't know what her plans are or if she even knows what today is," I said, calming my friend down enough.

This calmed Sona down and said, "Thank you Ren. But you can sense her if she was anywhere, nearby right?"

I frown with shook of my head and said, "Nope, but if she appears then so be is. She is your sister after all and despite how she acts most of the time she dose love you, Sona-chan. And this help you. I'm her Queen and I vow that I will do my very best to keep her in line."

Sona listened with smile on her face and nodded in understanding that I will do my very best.

"I guess your right. Though she's not here yet and she dose like to make an entrance. Maybe I got lucky and-," Sona said, but was cut when someone yelled out loud all the sudden.

"Let's get to the Gym!" The shout surprised us.

Sona, Tsubaki and I turned around to see a group of boys run past them as we made our down the hallway towards the set of stairs that would lead out to the gymnasium. Sona's happy look quickly morphed into one more serious as her president mast quickly took over her face and gained an aura of authority. I sighted that the moment was cut, and work was coming by some boys were can't control themselves.

"No running in the halls!" Sona called out, making the three boys quickly stop in their tracks and turn back to look at her with a nervous look.

Yep, this was going to be long day and I already know what happens in the Gym.

"Now why are you in such a rush? Do you not have homeroom to get too?" Tsubaki asked with an aura of authority.

The three all nodded, but one spoke up, "Apologies president and vice-president. We heard there was something going on in the Gymnasium and wanted to go see."

"And what is happening the Gymnasium that is so important?" Sona asked as she crossed her arms.

I could tell what the three boys were going to say and was right. They told that a cute…no a very hot girl in a magical girl costume that was performing a show for the students. My eyebrows twitched of these boys that are perverts and had no sham what so ever. It can't be helped, and in my view, everyone was a pervert in their own way. One can show to much or not, but that was the way of life and I already know what the boys were talking about.

Sona's face quickly went pale and snapped her head towards me, wanting some answered.

"It cold be anyone," I answered with shrugged of my shoulders.

"Was there anything else? Some king of description beside the obvious?" Sona asked the trio who were silent for a moment as they thought about that question before one spoke up.

"I think someone said that she had some kind of staff with a star on it," The student replied, making Sona turn even more paler.

Sona then took off running from where she was standing and healed ass down to the Gymnasium. Okay saw that one coming and could guess what will happen next. The three boys were left confused to what just happen while Tsubaki and I walked past them to follow Sona at a leisurely pace. We both gave one another a knowing look, having a very good idea what was about to happen.

Soon enough Sona with Tsubaki and myself caught up with her during her moment of panic pushed the doors of the Gymnasium wide open with both hands. Her focus immediately went to large group of teenage boys and a few girls that were huddled around the balance beams the gym club used. A little way from the large group Sona and I spotted Rias who had her own peerage by her side. Her Queen Akeno was by her side as usual along with her Rook Koneko, her second Bishop Asia Argento, her Knight Kiba and her second knight Xenovia. Her only Pawn Issei Hyoudou was with the crowd of people stationed around the beam.

"Sona! Brother!" Rias yelled out, noticing her childhood friend and me.

She quickly called us over, gaining her peerages attention as well as Sona, Tsubaki and myself.

"Over here," Rias said, waving her right hand to where she was at.

We walked over to where my sister was out, but to only have her jumped into my arms and hugged me. I hugged her back and miss my sister for a long time. It's been months since the last time I saw Rias or her peerage.

"I miss you Ren-nii-san," Rias said, putting her head in my chest.

"I miss you too Rias-nee-san," I answer back with a smile on my face and patted her head.

Akeno, Kiba, and Koneko smiled at me and leave me to have the moment with my sister. But the blue-haired girl, blonde-haired girl, and brown-haired boy were shock about on what was going on.

"What's going on?" Xenovia asked, speaking out for herself, Asia, and Issei.

Rias let go of the hug to answer the question and opened her mouth preparing to speak, but before she could someone yelled out a single word of someone's name and grabbed everyone's attention.

"SO-TAN!" A woman voice yelled, being my King and caused Sona to stop mid step.

I smiled with chuckle as I saw Serafall running towards her young sister and soon saw Sona's Pawn, Saji running behind her by pushing through the crowd of people. Yep it was just like before.

"I'm sorry President. I tried to stop her, but she wouldn't listen," Saji said through his tried breath from pushing people out of his way.

Sona tried to speak, but Serafall wasn't giving he the chance as she babbled away, serving to only make her get redder and redder.

"Sona-chan what's wrong? You're blushing like crazy. Are you not happy to see your wonderful big sis after being separated for so long," Serafall said before a pouted and stamped her feet gently on the ground to show displeasure at not get anything affection back from Sona.

Oh boy. I saw this coming.

"I think you should be much happier then this. We should be all cuddles and kisses," Serafall said happily, making Sona's eyebrows twitch and blushed more.

"So that's her sister and, who is he?" Xenovia asked, pointing at me while Rias and her peerage watched Sona reunite with her sister, despite looking mortified that they were even in the same building.

Poor Sona but will I help after answering some questions first.

"Yes, that's Serafall Leviathan. Sona's older sister," Akeno answered as Issei appeared next to them, having caught the question and answer.

He looked confused at the name Leviathan and how she acted towards her sister. No shock to me since big bro do sue not to sis these days, but on a low level.

"Leviathan?" Issei asked with question appearing on his head.

"Yes, one of today's Four Great Satans. And this person happens to my brother and Queen of Serafall, Ren Arc-Gremory," Rias answered and introduced me to her new members of her peerage.

This surprised Issei, Asia, and Xenovia to the core while Saji and Tsubaki were watching Serafall talking to Sona.

"Hello everyone and new members of my sister's peerage. Nice to meet you," I greeted with a wave of my right hand at them.

Before three new members could speak or say anything, Saji came up to me and looked in my eye, making me frown and he was not pleased with me being so close to his King and Tsubaki. He even puffed out his chest to try and show he was intimated by me. I wasn't trying to be but will if he doesn't get out my face.

"Who are you?" Saji questioned me as he crossed his arms and lent in to get an even closer to at me.

He squinted his eyes as he examined me from head to toe as if he was bloodhound and was starting to piss me off.

"Saji! Stop what you're doing night now!" Tsubaki shouted with hiss, noticing what was going on and walked towards us.

"But Tsubaki who is this guy?" Saji asked in question and looked at Tsubaki in confusion.

Can't balm him for not knowing me or the others. New Devils have it to learn after all.

"He could be someone trying to get too close to President," Saji said as he pointed at me.

Can't balm and Sona is hot in my eyes. So, I might, but not now and will be nice this time.

"You know it's polite to introduce yourself first when asking for someone's name. Also, it's impolite to talk about someone when they are standing right in front of you," I said my eyes narrowed a little that caused Saji to turn pale.

Still won't balm the new comers. Most don't know about me after all.

I stopped my glare with a smile and said, "But to ease your worries. I'm Ren."

Saji seemed a small bit easier knowing my name but still looked at me with frown. Okay, he was close on pushing it and will not like it if he keeps it up. Before he could speak or anyone else ask a question, someone suddenly yelled out my name and was my King.

"REN-KUN!" Serafall screamed happily as she ran towards me.

Soon Saji was launched across the gymnasium from my King. He went face first into the wall and then slumped on the ground as he held his face. Everyone and myself winced as he was in pain and hold his nose to stop the bleed. That's got to hurt and soon found Serafall still coming towards. I smiled and know what was coming next for me.

I opened my arms up to Serafall who all but pounced on to me, throwing her pink staff to the side and wrapped her legs tightly around my waist. Soon we locked our lips together in a very steamy embrace that caused everyone to blush in deep red and jaw drops on the ground with their eyes building out of their sockets. My arms came down and cupped my King's behind to keep her level with my face while having her arms wrapped around my neck as their mouth attacked one another. Soon we both stopped for air and look at each other.

"I take it you missed me?" I asked before Serafall linked our lips together again.

Neither us give the other time to breathe as our tongues put into action. I could tell that those who are watching were getting even more redder.

"Could you both please refrain from suck PDA! Do I need to remind you this is a school?" Sona asked with her arms crossed and give us a glare.

Serafall and I stopped from kissing each other for air and from Sona. She has a point and most humans can't handle it from the looks of it.

"She has a point Sera-chan. They can't handle it, and this is a school after all. We can have our moment later and miss you," I said with a warm smile on my face.

"Fine, but our moment will come later, and I miss you Ren-kun," Serafall replied with a warm smile on her face before she gave me a quick kiss on the lips and got up with me.

Serafall and I got up on our feet to see the humans going back to their thing with massive blush on their faces while the Devils had blush and shook it off for more questions.

"Um, President you have another brother and he is a Queen Piece. Isn't a girl usually the Queen Piece?" Issei asked, wanting some question and some others share the same thing.

"Yes, I have another brother while Ren is adoptive, but we still see each other as siblings and he was welcome into the Gremory Clan with open arms. And no Issei, the Queen is not strictly related to only women. Remember the Queen piece is the second most important piece to the peerage since it's commonly recognized as the peerages second in command. It has all the characteristics of the Rook, Knight and Bishop piece, therefore, the most well-balanced piece. Also, my brother is not the only male who holds the Queen piece. There are many men who hold that piece and none gets looked down upon in the Underworld. It's a position of great power after all," Risa answered and informed her new members of her peerage of me.

Issei nodded his head, understand what his King said and looked at me. I looked back to give him a smile and he smiled back to friendly with me. He maybe a pervert and has a big dream of being Harem King, but I think I can bump that down and help him grow to be stronger.

"So, I guess that means he is a big deal right. I mean he must be if he is in the peerage of one of the Four Great Satans and your brother," Xenovia commented and Rias nodded her head in confirmation.

"You are very correct Xenovia. When my brother became fifth teen he had the choice to be my peerage, have his own, or join another peerage. He chooses to be in Serafall's Peerage as her Queen. He trained very hard to gain his own set one day and is a big impact for many Young Devils to look up," Rias said with a smile on her face.

Her peerage and Saji nodded their heads on hearing my sister.

"Um President why would your brother chose that and not have his own set?" Issei asked while rubbing his head.

I decided to speak and said, "It was my choice and took it. While must would go for the fast track to gain their own peerage and that's fine, but I wanted to start on my own pace. The reason why I didn't choice not to be with my sister's peerage was not the reason I love her or want to spend time her. I want her to grow her own wings and become strong with her peerage. And day become as not just an Heiress of Gremory, but Rias the woman that fought for her own beliefs."

This caused everyone to be heart taken of what I said to my sister and caused Rias to have tears coming down her eyes. She never knows my true reason and thought back then that I did it to be free, but now she knows and was happy to hear that from me.

Rias wipes her tears away with her right arm and said, "Thank you Ren. I'm happy you believe me on a great level and will make you proud, brother."

"I'm already proud of you and Sona, sister. You two have a long way to go, but I have faith that will you both will do your very best to overcome the challenges that comes at you," I said with a big smile on my face and got them to smiled back at me on my words of wisdom.

While I am not from this world or gained a good life, I vowed to have a great life in this world and with family I love very much.

"That's right! Ren-kun and I hope to see you all do your very best, but for now we must go to the next class for the day!" Serafall said in a happy tone of voice as she dragged me to the next class.

I waved goodbye and the Devils did too as my King and I left the gymnasium while they went to class. Serafall and I walked towards the next classroom with us holding each other's hands. Yes, we are in a relationship and she was fine with me having a harem, but as long she knows the members and is the main alpha of harem. It was fine by me and fair enough.

Once Serafall and I made it to the next classroom, I offered her to go first and said, "After you my beloved."

Serafall giggled at me and said, "Why thank you, my dear."

The rest of the day went on fast and the summit will start within the few days. I look forward to it and will get ready but will enjoy the time I have with Serafall and my sister before things start. I'm happy to be here in the world of DxD and look forward on living it.

Ren's Harem: Serafall Leviathan. Yasaka. Madoka Bael (Female Sairaorg). Kuisha Abaddon. Coriana Andrealphus. Medea. Arcueid Brunestud. Leone. Nero (Red Saber). Esdeath Partas. Cassandra Aoi. Sona Sitri. Tsubaki Shinra.

Maybe list that votes could help: Kuroka. Xenovia Quarta. Rossweisse. Gabriel. Akeno Himejima.

Here is Madoka's Peerage

King: Madoka Bael

Queen: Kuisha Abaddon

Bishops: Coriana Andrealphus and Medea

Rooks: Arcueid Brunestud and Leone

Knights: Nero (Red Saber) and Esdeath Partas

Pawns: Regulus (Pawn x7) and Cassandra Aoi