Disclaimer: I do not Devil May Cry or High School DxD.

Summary: Long ago, it was prophesized that a Nephilim with the power of the Welsh Dragon, would bring about the end of Angels, Fallen Angels, and Devils. Now that Nephilim has appeared, and is a pawn of the Gremory Clan. Will the prophecy come true?

Author's Note: Welcome to the next installment to the Nephilim Chronicles. This story is going to use the original portrayal of Nephilim, though with a few twist. Issei is a Nephilim who becomes Rias's Pawn. Now I know that sounds like Issei won't be a Nephilim anymore, but he will have a few qualities that can only come from a connection to an Angel. Yes it sounds contrived, but it's not out of the realm of possibility (if you remember, Akeno was an Human/Fallen Angel hybrid, before she became Rias's Queen, so she's technically a Nephilim) and better than having him be born an Angel/Demon hybrid (I'm already using that one for three of my Nephilim Chronicles; I've got to have a little more variety). Also, this story's going to be different from my other Nephilim Chronicles, in the since that Issei has NOT grown up around Dante, Vergil or Nero nor does he know that he is a Nephilim.

Red Dragon Nephilim

Prologue: The Fallen Azure

It was past midnight in New Iberia as a pair of Fallen Angels flew over the city. The streets were mostly empty, and most of the shops were closed. It was rather relaxing to hear such peace and quiet, but they couldn't relax now, they were on a mission.

The first was a bald old man wearing a green tuxedo. The second was a busty young girl in a red sundress. They spread their black feathered wings as they flew throughout the air. As they continued to fly over the town, they heard several roars and stopped to investigate.

What they saw was a large group of Rogue Devils, surrounding a lone figure in a white hoodie. The Rogue Devils attacked the figure, but the figure vanished in a flash of blue. There was another flash as the figure appeared above the devils and came down fast, moving his arm in a hand chopping motion. There were several streaks of blue and the devils suddenly fell to pieces.

More rogue devils appeared and rushed at him, but he simply flipped over them and began to punch, kick, and chop every devil that came near him. After he was done, the fallen angels flew over to him.

"It is as they say," the old fallen angel said, "You fight hordes of rogue devils and come out with not so much as a scratch." The figure turned to them, "Two fallen angels all the way out here isn't a common sight," The old man simply bowed to him, "I am Ganon, at your service," the girl bowed to him respectfully, "My name is Ella, it is nice to finally meet the legendary Fallen Azure."

The Fallen Azure stood there silently for a moment before speaking, "I doubt you two came all the way here to exchange pleasantries, so what do you want." Ganon stood strait and cleared his throat before speaking, "Tell me are you aware of the Prophecy of the Dragon Nephilim?" the Fallen Azure stood silently for a moment as a memory from his past surfaced, "No, I'm not."

Ganon then pulled out a roll of parchment from his coat and unrolled it, revealing a painting of a red dragon, a figure with red wings, and another figure with blue wings. Ganon began to explain the picture, "According to the prophecy, a Nephilim born with the power of the Welsh Dragon, will die and be reborn as a Devil," he explained, "When this happens, the Nephilim will eventually bring the downfall of the Angels, Fallen Angels, and Devils."

Ganon then pointed to the figure with blue wings, "It was also prophesized that the only one able to stop the Nephilim would be the Blue Winged Fallen Angel." The Fallen Azure looked at him, "I assume there's something more?" Ella then walked over to him and opened a laptop, "Recently, we discovered a boy who possess a Sacred Gear," she said as a picture of a Japanese boy came up on the screen, "His name is Issei Hyoudou, he is a second year at KuohAcademy."

She then brought up a new picture on the screen, this time of Issei lying in a pool of blood, "Just a few hours ago, he was killed by Raynare, after he took her out on a date," she then switch to a new picture, "after she left, the boy accidently summoned the Heiress of the Gremory Clan in his final moments, and she revived him as a Devil."

"So what's this got to do with me?" the Fallen Azure asked. "We have recently confirmed that Issei Hyoudou is…or was a Nephilim," Ganon said, "and there's the distinct possibility that his sacred gear is the legendary Boosted Gear, or Red Dragon Emperor's Gauntlet."

"The prophecy said that only a fallen angel with blue wings could stop this threat," Ella said, "You are the only Fallen Angel who fits that description."

The Fallen Azure looked at the painting as a flashback hit him. It was raining, he was younger, and his wings were glowing with an ethereal blue aura. He had just killed a Rogue Devil, and he felt empty, he looked up and saw a red ethereal dragon looking dead at him.

The flashback ended as he returned to the present and he addressed the two before him, "I don't care about some prophecy or a pathetic child who allowed himself to be killed so easily," he said coldly, "I have more important matters to deal with at the moment."

He turned his back to them, "However, should the boy become stronger I may consider facing him." And with that, he spread his blue glowing wings and flew off into the night. Ella turned to Ganon, "What do we do now, Father?"

Ganon said nothing for a moment then sighed before addressing her, "For now, we return home, if he thinks the Nephilim is a threat, he will eventually seek him out." Ella looked at him, "Father, shouldn't we tell Azazel-sama about the prophecy?" Ganon shook his head, "He already knows about it, but he doesn't believe it."

Ganon let out a stressful sigh, "The dangers foretold in the prophecy are too great to just ignore," he said, "We must do everything we can to stop the Nephilim, even if we ourselves can't kill him we must at least weaken him." Ganon spread his black feathered wings, "Come on let's return home." Ella spread her wings, "Okay, Father." And with that, the two flew into the air and began to make there journey back to Japan.

Aaannd CUT! So what do you think of this one? I've wanted to do this crossover for a while and now it's finally here!