A Hero and his master - Rias Gremory x Reader Highschool DxD Fanfiction

#1 - The new Transfer Student

3 weeks before you were transferred, in a secret lab in a different plane of existence, seven legendary cultists have invented something insane.

"Here it is! It's complete and ready for demon houses of all kinds!" the lead cultist shouts out. A new chest piece was created. A new character to be recruited. "Now, it is whittled down to 2 names... the Trickster or the Doppelganger. "I like the sound of Doppelganger!" the cultist shouts to himself.

Back to the present (takes place after season one)

You walk in unnoticed in the crowds of people.... lies. You walk in with a parade of girls fangirling behind you, following you around the school. After around 10 minutes of walking around in complete circles, you turn and ask the female stalkers where your class is. After 3 seconds, an insane battle occurs as the girls climb on top of each other to be with you. You love the attention, but your getting serious. You look over your shoulder to see a boy with brown hair casually walking down the corridor. "Seems normal enough" you mutter as you make your way over to him. The girls fighting over you are completely oblivious to you going away. "Excuse me, but where is class (Insert anything here!)?" you ask him. He just turns and stares over your shoulder at the massive battle at girls. "How do you make them fight over you!?" he asks excitedly, leaning in for answers. Then, a girl squad rushes in and chases the boy away, while shouting things like "Get away you pervert!" or "Don't corrupt him!" which lead you to some conclusions. But, you were partially perverted anyway. You look around to ask someone else... someone who doesn't get chased away. You look around and notice a girl walk up to you. She is about as tall as you and seems pretty. "Excuse me, I heard your name was (Y)? I'd like to be your guide if you don't mind" she asks, while blushing. Her long black hair is beautiful, as well as her purple eyes. "Yeah. Thank you.. and your name is?" "It's.... it's Azshara (Ah-shaar-a)". After a tour around the school, and a long school day. You do something out of the blue... you aren't sure why, but you just do it. "Hey, Azshara? Do you want to go on a date... like, right now?" you ask her. You feel eyes on you, but you think it's just girls spying on you. "I'd... love to!" she says, being very forward. She grabs your wrist and pulls you out of the school.

7 hours later. It's 10:04PM...

You lost the track of time, and it's really late. But for some whatever reason, Azshara really needs you to go to the park with her. You agree to because you want to go home soon. She stands at the middle of the park as you watch in suspense for some reason. You look down and look at the flyer stuck to your shoe with chewing gum. Yuck! But before you throw the flyer away, you look at it. It's just a pentagram drawn in marker on a crumpled piece of paper. It's probably some kids doing it as a joke. Then, Azshara turns to you... and sprouts black wings!? She immediately fly's up into the sky and suddenly materialises some kind of glowing trident out of thin air. "What's going on!?" you ask, while going insane. "I used brainwashing light magic to make you ask me out. I planned all of this. Why?" she stops talking, while preparing to throw her trident at you. "You are too powerful to live in this universe". She throws the trident at you. You try to escape but the trident hits you in the back and stabs you through your body. You fall to the ground, bleeding out. "Why... why..... why.... me?" you mutter, in a tone that she can't here. You can't die yet! You have a whole life to live! You picture the one thing you never got in life. You had always wanted, but was always so far away. Boobs. Big, bouncing, motorboatable boobs.

You hear a strange beaming sound far away. You tried to get up, but you can't.

You blacked out.

The next morning.

You wake up in an unfamiliar household. You realise that you are completely naked. You notice your clothes on the floor in a neat pile, and quickly put them on. As you look around for an answer to what happened, you hear yawning and shuffling coming from the bed you were just in. You grab the top end of the quilt, and lower it, to find a naked, red haired... very attractive.... sexy.... girl. Then, she suddenly gets up and looks at you. She has no shame in her being naked!? Who even is she!? Did we... do things? How come I missed it!? "My name is Rias. (Y), I assume? You summoned me just before you blacked out. So, I brought you to my pawn's house and healed you" the hot woman said. "Your pawn? This isn't a chest game, dear..." you tell her, oblivious to what she means. She explains everything.

Around 5 minutes later.

"I'm... a doppelganger? I'm one of the first?" you question in disbelief. Rias, with her clothes now on, nods yes. So that boy that was chased away was called Issei... and he lives here? You decide to get out of the house unnoticed. So Rias helps you jump out of the window safely. It was going to be hard to get used to this.

After a long school day at Kuoh Academy, you go to a place where Rias told you to go after school. It's still hard to take in that your... a demon now. You kinda liked how unique you were though. Only 4 doppelgangers currently exist, and your the only known one by demons currently! All the other 3 used undiscovered doppelganger powers to vanish and hide away from people.

You knock on the strangely large door. Somebody from inside called you to come in. You walk in to find a bunch of people, including Rias and Issei. Rias introduces you to the people you haven't met yet. "(Y), this is Kiba, Asia, Akeno and this is Koneko.". Issei gasps and runs up to you. "Can you tell me how you got girls to fight over you now!?" he gets. "I don't... I don't really know. It just happens." you say, in a proud manner. "Anyway, this is (Y). Everyone, he is our doppelganger!" Rias says, seeming really excited. Everybody cheers, even Koneko. You were told that she was more "expressionless". That, or she would be angry. Then, the hottie called Akeno walks up to you and sticks your finger into her mouth and licks it with passion. After a few seconds when she stops, she looks at you and says "I'll enjoy having fun with a doppelganger!". "Rias, what makes me any important being a doppelganger?" you ask, while scratching the back of your neck. She looks at you unsure "I don't know. The only thing we can assume is by the meaning of doppelganger, which is pretty much a "look-a-like" to somebody else" she tells you. Then she says "You should start by training and doing assignments. I already have one for you. All you do is complete the task given to you, and you receive something of equal worth". It seems simple enough. You get teleported into some guy's apartment suddenly.

"Urgh, I got a dude?" he says while lowering his head on a table. He was a overweight man with a really long beard and an extremely dirty apartment. You wanted to get out of here fast. "What can I do for you?" you ask, pretending to smile and be nice. He looks at you in disgust and says "get me some nudes"... did he tell you to give him a picture of a naked girl!?.. you ask him for his number so you could send him a picture. After getting his number, you found a picture from a porn site and just sent that to him. He seemed happy and complete. "Ugh... I have to give you something now, don't I?... hmm" he sits and looks around the messy apartment. Of course, there's nothing of worth to be seen. Then, he pulls out a dirty wallet and gives you 8000 yen! Nice! You notice a red glow appear underneath you, and you end up back where you started. Koneko, Asia, Kiba and Issei aren't anywhere to be seen. They must've went home. "Wow (Y)! That's really quick for an assignment!" Rias cheers, really pleased. Then, she stands up. "(Y). I need you to duel with Akeno." she tells you.

"What!?"

I'm sorry, but that's all folks! If you enjoyed please comment and tell others!

Need something to do? Check out my other book "The heroes"! It's a Sword art online Kirito x reader fan fiction with 6 parts at the time of me typing this up!