Disclaimer: I do not own High School DxD, or anything to do with the franchise, all character in this story apart from the Oc belongs to their respectful owners.

Occult research Club Old School Building

Issei slowly opened his eyes, he noticed he was in a Victorian style room, however he wasn't alone, there sat opposite him was Rias Gremory, Akeno Himejima, and boy Issei hated with a passion Yuuto Kiba, and a first year that he had seen around the school, named Koneko Toujou. Standing behind them was his best friend Yusei. Issei wasn't sure where he was, but the shocks got worse as he looked down to his left arm and cried out as something red was attached to it. Issei quickly jumped up and attempted to take the red thing off that had attached itself to him.

"What the hell is this thing? Get it off me, where am I? Why am I here," All these questions were running through his mind, he then remember what had happened, he and Yusei had been attacked by some really hot chick, Yusei could still see her huge bust and seductive smile on her face. Issei began to drool just thinking about it, however he was soon bought back to reality with the first year talking,

"Pervert!" Yusei blinked in surprise and noticed his best friend was shaking his head. Issei looked around the room once more. Wait, what was everyone doing here, and why were they looking at him like that.

Rias sighed, she had expected this reaction from Issei, after all he was in an unfamiliar place and, not mention the Sacred Gear now visible on his left arm. Rias decided to do the introduction before he become more stressed.

"Welcome Issei, my name is Rias Gremory, this is the club room of the Occult Research Club, I am the president and Akeno is my vice President. We wanted to talk to you, and explain a few things. I know what I am about to tell you might be difficult to understand or believe, but it needs to be said. Do you remember a girl called Yuuma Issei?"

Issei blinked in surprise. "Yeah that was the girl I dated in my dreams, but how would you know that? Wait can you read minds or something."

Rias sighed. "Issei what you experienced was not a dream, it happened. You went on a date with Yuuma and she killed you, using a spear of light. Before you died you summoned me, and I saved you. That piece of paper I gave you before the date, wasn't just any leaflet Issei, but a summoning spell."

Issei eyes widened, "Wait, a spell, that's stupid, there no such thing as Magic, this is all a dream isn't it, I am asleep again, I know I will pinch myself and wake up. Ouch, that hurt, wait why are you all still here?"

Rias groaned, it look like the supple approach was out, she would have to show him everything. Rias hold out the palm of her hand and an orb of red and black energy formed in it, she noticed the fear on Issei face. "As you can see Issei, Magic does exist and I can use it. However the reason I can use it, is because I am not human, am a Devil, just like you. When you summoned me, I saved your life, but there was a cost, I had to bring you back as a devil, and you are now one of my servants. Everyone in this time apart from your friend Yusei is a devil"

Issei looked around the room and noticed everyone was nodding, Issei laughed and scratched the back of his head. "Good one, this must be some big prank, did you arrange this Yusei? Is this pay back for what I did to you last year man."

Rias groaned, it look like more evidence was needed. "Very well Issei, if you don't believe me I guess I will have to show you." Rias got up off the sofa and made her way over to Issei, she closed her eyes and laid her hand on his cheek, there was a little spark before she heard Issei shout

"Ouch" Before Issei eyes everything began to flash, the meeting of Yuuma, their date, the stroll in the park, and then when she tried to kill him. Issei could see the glowing spear of light sticking out of his chest, as he slowly bleed to death from the wound, he looked up into the face of his new girlfriend who had now turned into something with huge black wings. Issei watched as she flew away leaving him there to die. He then watched as he placed his hand in his pocket and removed the leaflet Rias had given him before the date. He watched himself fall back, and just before his eyes closed, he saw a red glow and then long red crimson hair, and the face of Rias looking down at him. Issei felt Rias move her hand from his cheek, which bought him back to the room where he was now. He pushed Rias away and jumped up, he tried to run to the door only for his best friend Yusei to block the exit.

"Easy Issei, no one is going to harm you, everything you just experienced happened, I was told last night about it all, I too didn't believe it at first, but now I do. Rias is a devil, like everyone else in this room, including you. She saved your life, and as payment you were bought into her house as a servant. It was the only way Rias could safe you Issei."

Issei suddenly growled and he threw his fist forward hitting his best friend in the face. "You mean you knew, and you didn't tell me, all day I was thinking it was a dream, and it actually happened. That's why you been sticking to me like glue today, so you could keep an eye on me. You bastard!"

Yusei raised his forearm and blocked another punch from his best friend, he could understand Issei being upset, after all you don't get told you're a devil everyday, and that your a servant to some family you had never heard of. Yusei managed to grab the fist and twisted the wrist of Issei. Causing his best friend to cry out in pain.

"Listen Issei, I can understand you being upset, and feeling like I have betrayed you, but that is not true. This is happening and the reason I was sticking by you today, was in case you were attacked like last night. Rias asked me to keep an eye on you, to make sure you stayed safe until she had time to explain all this. That girl we both faced a while ago was also real and she was the one who tried to kill you last night. Please calm down and let Rias and the rest of her house help you understand" Yusei let go of his best friends wrist and watched as he slowly calmed down.

Issei cradled his wrist and looked at his best friend, he then looked down to his left arm to see a gauntlet like he had, but Yusei was golden yellow. "What's that on your arm, screw that, what's this on my arm?"

Yusei sighed, "If you come sit down Rias will explain everything. They're called Sacred Gears, and they are bestowed to special individuals. I don't know much about them myself, I only know that three spirits reside in it, and that its called Trinity."

Issei turned towards the sofa and sat back down again, everything was slowly sinking in. "So I am a devil, and I am your servant, does me being alive and being your servant has something to do with this on my arm?"

Rias nodded her head. "Yes Issei, you wield a powerful artifact known as a Sacred Gear, You were attacked by the Fallen Angel, because they fear these artifacts. Not all Sacred Gears are artifacts some can be abilities. For example Kiba wield the Sacred Gear called Sword birth, this lets him summon swords and blades at will, he can also use all types of sword, and is a master at wielding them. Akeno and Koneko don't have Sacred Gears, but they have their own special abilities. I apologise for what I did, but it was the only way to save you, Please forgive me." Rias began to cry and fell onto Issei and wrapped her arms around him, much to the second years surprise.

Issei could hear Rias crying and feel her tears soaking his shirt. Issei still wasn't sure about being a devil, but then again, when his new master is this hot, maybe being her servant won't be so bad after all. Issei suddenly had day dream of laying on bed naked and Rias standing over him, a whip in her hand and cracking it. He suddenly started drooling again,

"Pervert!" Issei looked across to see Koneko was looking at him, she was frowning, and her mouth was in a firm line. Issei felt Rias lift her head and watched as his new master wiped some tears away.

"I am sorry Issei, I should have composed myself better. I will do all I can to make sure you are happy and loved in this family. Although you are my servant, you are my family too, and we all love each other here. Akeno is like a sister to me, and Kiba I treat as a brother, Keneko is treated as my baby sister, and you will be treated no differently to them."

Issei looked up into the face of his best friend. "What about Yusei, is he part of your family too?"

Rias shook her head. "No not officially anyway. I did offer him the chance to join, but he refused, due to him having to remain neutral, so not to unbalance anything. You see Just as there are devils, Angels also exist and so do Fallen Angels, long ago, all three side were involved in a huge war, and to this day, each side don't see eye to eye. However at the minute the scales of power are balanced by you joining our side, but if Yusei was also to join then the balance of Power would be tipped in our favour, which would provoke the other two factions."

Yusei however spoke up. "As I said to Rias, yesterday, I might not be an official devil, but seeing how the Fallen Angels are targeting me and you, because of these, then I will assist you and her family in helping to bring this conflict to a conclusion, Rias maybe you could explain a little about the Sacred Gear, Issei is wearing."

Rias nodded. "Of course, I believe the Sacred Gear Issei wields is one of the legendary Sacred Gears known as the Boosted Gear. This Legendary Gear is said to house the spirit of the Red Dragon Emperor, it allows the user to boost their power every ten seconds, it also has other abilities. Unfortunately with the state your Gear is in, its difficult to determine if it is the Boosted Gear or if it is another type of Sacred Gear. Only time will tell."

Issei looked across to the Gauntlet that was now on his best friends arm. "What about that one, what does that do?"

Rias looked across and smiled. "Well to be honest I have no clue, you see its not one of the Sacred Gears known to me, all I know is it is called Trinity and its special Power is absorb. That was why that Fallen Angel couldn't kill you yesterday, Yusei used the Power of his Sacred Gear to drain her special power from her, in this case he stopped her creating spears of light. I believe his Gear as other abilities, but like your, but he too will have to unlock them."

Just then a magical circles suddenly appeared and a robe figure stepped out of it and bowed its hooded head. "Forgive the intrusion Lady Gremory, but a stray devil has decided to make its home in your small town, we would like you to vanquish it. From what we understand its is using an old house just on the edge of town, its luring human into the house and then eating them. It must be stopped. I trust we can count on your co-operation in this matter."

Rias stood from the sofa and inclined her head. "My Servants and I will take care of it immediately, please relay this message back to the Underworld."

The robed figure bowed once more and vanished from the club room using another magic circles, once he was gone Rias began to organise everyone. "Okay everyone its looks like we have stray to take care of, Issei and Yusei, I would like you two to join us on this mission, it will give you a small insight into how we do things around here. Now please everyone gather around me, and I will transport us to the house."

Everyone walked into the magical circles, once Rias knew everyone was inside it, she began to transport everyone. They all appeared outside an old house, Rias could already sense the stray inside. "Its here, Kiba, Keneko, draw it out, Akeno, you stand ready for when it appears, Issei and Yusei, for now I just want you to watch. Is everyone ready, Good then lets go." Rias led everyone inside the house once the door closed they all heard a female voice.

"Oh fresh meat, hmm, I was getting hungry, you saved me the time in luring you here. Now prepare to die"

Rias ignored the threat, and shouted into the darkness. "My name is Rias Gremory, sister of the current Lucifer, and under the marque of our name, I will punish you and purge you from existence."

The woman laughed. "I like to see you try, you little slut, I killed my master and now I will kill you!"

Rias stared into the Darkness she then turned to Yusei and Issei, "You two watch carefully I want you to pay attention to how we attack this beast." Before Rias could finish however the body of a woman appeared from the shadow, she was naked from the waist up, and her huge breast were bouncing around.

Issei, just stood there, just staring at the biggest breast he had ever seen. He noticed the nipples suddenly glowed and two beams of light was heading for him. Issei just stood there until he felt someone push him out of the way.

"For fuck sake man, start thinking with your head, not your Dick, that bitch could have killed you!"

Issei looked up and noticed Yusei, was standing over him, a huge frown on his face. Issei turned to see Rias giving instructions, he watched as Kiba suddenly vanished in the blink of an eye. Several slashes later the woman's arms were severed and now laying lifeless on the floor. Issei was now able to get a good look at the woman, it seems only half her body was human, the rest looked like a giant monsters. "Wow Kiba really did that" Issei couldn't believe it, he heard Rias speak to him.

"Just like in a game of chess, High ranking devils like myself are given 15 pieces of a chessboard, we call these evil pieces. Each piece represents a certain trait, for example, the Knights special ability is speed, and as you have just witnessed, Kiba is my Knight."

Issei suddenly looked and noticed the first year was now stood in front of the monster, fist up ready to fight it. "Whats Koneko doing? She will get eaten." Just as Issei had said this, a huge jaw opened up and snapped around the first year trapping her inside. Issei looked to Rias and could see she was smiling, why was she smiling, that thing had just killed one of her servants.

Rias noticed the worry on Issei face. "Relax Issei, Koneko is my Rook, the trait of a Rook is strength." Just as Rias had finished speaking, everyone witnessed Keneko smash out of the jaws and then lifted the monster above her head and threw it, up high. Issei was speechless he watched the monster crash down onto the floor. He then heard a sweet chuckle from Akeno.

"My turn is it, oh goody, we are going to have so much fun, you and me." Issei and Yusei watched horrified as Akeno used her magic to torture the monsters, while she was doing this, her body was getting all hot, and she was using her spare hands to cup her breast. Issei, couldn't take his eyes of Akeno and her face which was in pure ecstasy as she continued to torture the monster. He felt a firm whack to his head and noticed his best friend Yusei had a huge tick in his forehead.

"Keep your eyes of Akeno, she mine!" Issei blinked in surprise, his best friend actually liked a girl, Issei had thought he was gay, after all he didn't take part in their peeking sessions and he was always avoiding female company. Issei was pulled from his thoughts by Rias.

"Akeno is my Queen, and she has the traits of all the other pieces on the board, she is also into rough play, if you know what I mean, and seeing someone in pain, really turns her on. Akeno that's enough."

Rias looked over to her queen and could see a cute pout, she then walked over to the now smoking charred body of the stray devil. A magic circle appeared under her feet, and red and black energy appeared in her palms. "For killing your master, you deserve to suffer in the deepest pits of hell, I Rias Gremory, on behave of the Marque House of Gremory sentence you to immediate death, now begone!" The red and black energy left her hand hitting the stray devil, causing it to cry out in pain and vanish.

Issei gulped and looked to his best friend. "Dude, remind me to never piss her off!" Yusei had to agree with his best pal, that was scary. Once everything was cleared , Issei and Yusei followed the rest of the club members outside, however something was bothering Issei.

"Hey, Rias, if all your servants are representative by chess pieces then what am I?"

Rias looked to Issei and smiled. "You are my pawn, and your special ability is promotion, This allows me to promote you to any other piece except King, but you can only be promoted if I give you permission to do so."

Issei head dropped, however it soon lifted after he heard about the promotion ability. Maybe life as a devil wasn't going to be bad after all.