Primordial Azure Dragon, is a dragon that has tremendous power that makes supernatural beings even the gods are afraid of him. God even said that his strength was stronger than Ophis and Great Red, therefore no one dared to make him angry.
God of the Bible used to describe Azure Dragon as having a snake-like body with Azure colored scales, white scales on the back, four pairs of legs and deer-like horns, blue eyes with horizontal iris, and has a size equal to Trihexa.
God also said that Azure Dragon was a Dragon God like Ophis who had aspects of Life and Death. And he was the head of the dragon race, and he was nicknamed The King of All Dragons.
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Present
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Kuoh city is a city where supernatural activities gather, even though the city is comfortable to live in. This city is owned by one of the Devil race pillars, more precisely possessed by the Gremory clan and the Sitri clan.
At Kuoh Academy it was famous as a Academy for girls, but about a year ago the Academy became a mixed school. Even so, the average number of male and female students is around 2: 8 in total. So there are more girls than boys.
There is also an old building and the old building is an ORC club building, in the room there are eight people gathering. "I told you Raiser that I won't marry you!" a woman shouted.
She seems to be in her late teens, she has long red hair that reaches her back, she has beautiful blue eyes, she also has E-cup sized breasts, and wears a female student uniform.
"But Rias, this marriage has been agreed by both parties. So you can't refuse it" said the man named Raiser with pride.
He appeared to be 20 years old, he had blonde hair, blue eyes, wearing a red suit that was left open with a white shirt, red trousers and black shoes.
"Even so, I don't want to marry a man like you Raiser" Rias said while glaring at the Riser. Raiser furiously heard that, "Listen Rias if you don't want to come with me to the underworld, I don't hesitate to kill your Servant," Raiser said threateningly as he took out a flaming wing-shaped flame on his back.
Hearing Raiser's threat made Rias angry while releasing a reddish black aura from her body, "If you dare to touch my servant, then I will kill you Raiser" Rias said sharply.
"Rias-sama, Riser-sama, I hope you two calm down first. If you continue like this I won't hesitate to stop both of you in the name of Lucifer-sama" a woman's voice threatened. They then lowered their killing intent and looked at the source of the sound.
Seen a woman who appeared to be in her mid-twenties, she had braided silver hair, cold-looking silver eyes, she had DD-cup breast size, and she wore blue maid clothes that had pants to ankle length.
"If the one who said the Queen from Maou Lucifer, Raiser would not be able to refuse it" Raiser said with a haughty tone.
Rias then looked at the woman's silver eyes, "Grayfia I told them that I would not marry Raiser" she said firmly
"They know Rias-sama will reject this marriage, so they made a solution to solve this problem," Grayfia said.
They were curious to hear, "What is the solution, Grayfia?" Rias asked curiously. Grayfia then look everyone in this room, "With a Rating Game," Grayfia said.
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Not far from there
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In the sky there was a boy who appeared to be fourteen years old who was currently floating, he had white hair, he had azure eyes with horizontal iris, he was wearing a black jacket that was left open while wearing a blue shirt, wearing white pants, and sports shoes blue.
He is currently staring at a building more precisely the ORC club building, he then looks at the teenager who looks seventeen years old, wears the Kuoh Academy uniform for male students, and he has brown hair.
He looked at the teenager more precisely staring at the teenager's left arm, "So now this is your host, Ddraig? He really is the weakest Sekiryuutei generation I have ever met" said the boy monotone.
Then the boy closed his eyes, "But I will give him a chance, if he is worthy then I will let him live but if not," said the boy with monotone.
Then the boy opened his eyes with a cold look, "Then I will not hesitate to kill him" said the boy coldly. Then the boy disappeared in the blink of an eye.
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The underworld
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It's been a week since the Rating Game which Raiser won. Right now in a magnificent hall where there will be a wedding between Rias Gremory and Riser Phoenix.
On the stage came an orange magic circle accompanied by sparks, and from the magic circle Raiser appeared wearing a dressing gown.
"ladies and gentlemen, I'm here to introduce the woman who will be my wife, she is Rias Gremory!" Raiser shouted, pointing to his side, a circle appeared beside him and Rias came out from the magic circle.
But the pleasure did not last long, because the two entrances to the hall were destroyed and showed a figure of a brown-haired teenager, brown eyes, and wearing a Kuoh Academy uniform for male that he left open showing a red shirt.
On his left arm displayed a red gauntlet with a green gem and two golden nails that manifested on his arm that covered more of his arms, "BUCCHHOOUU" the young man shouted loudly to be heard all over the hall.
"I'm Hyoudo Issei here to take Rias Gremory back!" Issei shouted. Seeing that made the devils there stare in shock at Issei, "What happened!?" "Who is he !?" "Luficer-sama can definitely explain it!" said the devils who were there.
Then Issei walked forward but he was confronted first by the guards, "you, don't move!" said the guard by pointing their spears to stop Issei. But the guards were defeated by three people who came to help Issei.
"You're late, Issei," said the boy who has the same age as Issei, he has blonde hair, has blue eyes, wears black formal clothes while holding a sword. Issei looked at the teenager with a surprised face, "Kiba!" Issei said.
"Senpai, you can't lower your guard," said a girl monotonously. She looks like a fifteen-year-old teenager, she has white hair, has yellow eyes like a cat's eye, a B-cup sized breast, wearing a blue dress with knee length. Issei saw the girl, "Koneko!" Issei said.
"Ufufufu, leave this to us Issei-kun" said a girl in a teasing tone. She appears to be in her late teens, has long black hair with a high ponytail style, has seductive purple eyes, has an EE-cup breast size, and wears a black kimono. Then Issei looked at the girl and nodded her head, "Yes, Akeno-senpai," Issei said.
Then Issei ran and stood before the stage, "Rias Gremory's virginity is mine!" Issei shouted so loud that it was heard by all devils. The devils heard him shock "I can't believe it !?" "How rude !!" "kill this lowly devil !!" the devils said.
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Outside the building
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Seen in the sky there was a boy who at that time, now he looked at the building to enjoy a show.
"Now, show me that you deserve to be called a True Dragon," said the boy. Then the boy saw the battle between Raiser and Issei who was in scale mail mode. He saw the fight between the two of them which he thought was a boring battle.
Then the boy saw Issei pulling out a holy object, "He is clever, it is true that a phenex can be defeated or killed using holy objects or having a strong attack that can destroy the body of his enemy" thought the boy with an interested face.
After the fight between the two of them finished the boy then sighed, "I decided" the boy muttered. In the blink of an eye the boy disappeared from there.
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In the hall
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Right now in a hall was busy talking after seeing the fight between Issei and Raiser. at this time Issei who was injured was being hugged by Rias, "Ise, thank you for freeing me, and forgive your King for making yourself hurt" said Rias while shedding tears.
"You don't need to worry Buchou! I'll help you if you're in trouble, because I'm your Pawn" Issei said with a smile. Hearing that made Rias let go of her arms and looked at Issei with a beautiful smile, "Issei" said Rias in a soft tone.
The others looked at them with smiles on their faces. But suddenly, "So you are the current Sekiryuutei?" asked a voice monotone from above. Suddenly they all looked up and showed a blue haired boy who looked fourteen years old, who was floating in the air.
Sirzech walked over and he looked up, "Who are you? How can you be here?" Asked Sirzech in a calm voice. But inside, 'Who is he !? I can't feel his presence at all! ' Sirzech thought worriedly.
Sirzech seems to be in his mid-twenties, has the same hair color as Rias but has a long over shoulder, he has blue eyes, and he is wearing an armor. (armor can see in the anime)
The boy ignored Sirzech's question and continued to stare at Issei. Silence instantly no one spoke to each other. But the silence was broken by a voice, "You ... Why are you here ...?" asked a voice in a scared tone.
It turned out that the voice came from the Boosted Gear, more precisely the voice of Ddraig. Hearing Ddraig's fearful tone made Issei curious, "Hey Ddraig, who is this little boy?" asked curiously.
All who were there were also curious after hearing Ddraig's fearful tone, "Partner If you want to live, you better don't make him angry!" Ddraig said in a serious tone.
Before Issei asked further, the boy then began to fall down slowly. After his feet touch the ground, the boy then glances at Boosted Gear, "Ddraig, is he your host now?" asked the boy.
"That's right, he is my new host," Ddraig answered politely. Hearing the answer from Ddraig The boy stared at Issei with a disappointed face, "I'm disappointed, the current Sekiryuutei is this weak? Even he is the weakest Sekiryuutei, both in the past, present, and future" said the boy in a disappointed voice.
Hearing that made Rias angry, "You! Who do you think you really are, daring to say that to my servant !?" Rias asked in a firm tone.
The boy then opened his mouth "Because I am the Promodial Azure Dragon, The King of All Dragons" answered the boy while releasing strong killing intent.