(Important for the story: There are two types of dark beings: The Devils and The Demons, The Devils are the same in the story like Rias and all, but The Demons are stronger than The Devils but their race was almost destroyed by the dragons and you are the final survivor. The Demons are so powerful that even the dragons had a hard time defeating them. Meaning not only you are a dragon you are also a demon. So you're just too OP for them. Oh I almost forgot to say that almost all of your power is sealed and you're immortal and immortal in the reincarnation way like Ozpin from RWBY and Meliodas from The Seven Deadly Sins. What you ain't The King of The Dragons for nothing.)

(P.S: The story takes place after they get their familiars meaning Issei & Asia have already joined. And also I haven't watched the anime in a long time so I might mess up the timelines a bit)

The members of the Occult Research Club were peacefully sitting in their club room minding their own business. Rias, Akeno and Asia were talking about magic, Kiba was helping Issei in his studies and Koneko was eating chocolate peacefully, when suddenly Issei stops everyone in their tracks.

Issei: "Hey Prez?"

Rias: "Yes, Issei?"

Issei: "What's The King of The Dragons?"

This question makes everyone's except Asia's eyes widen.

Rias: "Wh-Where did you learn about that?"

Issei: "In this book while Kiba was helping me study. Wait is The King of The Dragons a girl? Is she hot? Where is she? Does she have big bo-" Koneko shuts him up by punching him across the room leading him to crash and make an Issei sized hole in the wall.

Koneko: "You're the worst."

Rias and Akeno then compose themselves and answer Issei's question.

Rias: "No Issei, The King of The Dragons is not a girl."

Akeno: "Ara, were you hopping for him to be a girl when there are so many around you?"

Issei: "No! No! I was just making sure!" Koneko shoots him a glare. Issei gulps. "Then what is he?"

Koneko: "He is The king of the dragons, dumbass, can't you tell by his name?"

Issei: "Oh Uh yeah he is, I wanted to know if he was a girl so I can add her to my Har-" Again Koneko punches him. "Stop doing that!"

Koneko: "Then stop being a pervert!"

Issei: "Never!"

Koneko: "Then for me as well."

Issei: "Ok Prez, I'mgoingtomyhousenowseeyatomorrowbye!" And Issei runs as fast as he could towards his house.

Asia: "President, who is The King of The Dragons?"

Rias: "He stands at the top of all the races, he rules over the dragons, he is so powerful even if all of the factions join together to beat him, he would be able to beat us easily."

Asia (frightened): "He sounds scary."

Rias: "Yes he is very scary which is why we were all a bit surprised when Issei asked that question, but thankfully he mostly stays to himself so he won't be waging war on us."

Asia: "Ok, President *yawns* I'm tired now can we go home now?"

Rias: "Alright, Okay everyone the meeting is over we will meet tomorrow after class!"

Everyone: "Yes President!"

Meanwhile in an unknown cave in the mountains, you can hear heavy snoring as a pair of red eyes open.

The large creature stands up on four legs as the light of the sun reaches inside the cave and sheds light on the giant creature which was revealed to be.......

(Replace the purple with Red)

A Dragon.

Dragon:

A figure known as Est comes out from under the dragon's wing.

Est: "It has been a while."

Dragon:

Est: "As long as I'm with you I won't get bored." She say as she smiles lightly at the dragon, but soon drops it, "Are you getting bored of me?"

Dragon:

Est thinks for a while then finally says.

Est: "Okay, fine."

Dragon:

Est: "Yeah, let's go, (Y/N)."

Meanwhile all the faction leaders get a slight shiver down their spine as they all say the same thing.

"Something big is coming"

(Alright 800 words, good first chapter if I do say so myself, I'll try to make longer chapters tho, see ya!)