Hello folks, Lucas Bane here with a rare combination of stories. This story will be a crossover between Final Fantasy VII and Highschool DxD. If you're looking forward to Cloud and/or Co. kicking devil and fallen-angel butts, then you've come to the wrong place. While I have nothing personal against them, this story is about one man with one black wing. That's right! Sephiroth, aka 'The Nightmare', aka 'One-Winged Angel', aka 'Baddest MotherFu**er ever conceived!'

WARNING: THIS IS AN ALTERNATE UNIVERSE! DON'T GIVE ME TOO MUCH CRAP IF SOMEONE IS A LITTLE OOC! Be respectful about any problems you report and I will do my best to fix it. This chapter will just be a prologue, but it's main purpose is to see how well this idea is received. I came up with this idea just randomly. I was reading Highschool DxD by Zero011 when I came across one of the characters having a single black wing. Immediately, I thought of Sephiroth. He's called the One-Winged Angel, and that made me think of Fallen Angels, then I came to this idea.

Alright, note's over, now on with the prequel. Warning, if this story is received well enough, a much better prologue will be added if necessary. I do not own anything related to FFVII or HSDxD.

A blinding light.

A massive roar of an explosion.

These two sentences is all that anyone in the Underworld can describe. An explosion as far and wide as the sky itself occured, screaming out a violent, ear-splitting roar that would drive many beings deaf. None could look up into the sky to find the source of the explosion. If one could look, they wouldn't actually see an explosion yet. Instead, what their eyes would meet could only be explained as the very atmosphere itself was being drawn towards the sky as it began swelling.

(Other side of phenomena)

An unimagineable amount of energy collided with Cloud and his group as they had braced for the impact with all of their power. Sephiroth looked down at them with a triumphant smirk as he let the egdes of an actual sun pass by him and eradicate his rivals. He did this even when Cloud's buster sword was sticking out of his chest. It was his last chance of killing the annoying SOLDIER wanna-be before he succumbed to his wounds. Why was there a sun this close to the planet? It was the fruit of using a ton of magic power on Sephiroth's part.

His ultimate and last ditch attack- SuperNova. It involved one with a genius intellect concerning physics and astronomy, as well as a mage with the magical power of 500 magic casters. The spell pulled a far-away comet from outside the galaxy and into the Milky Way galaxy. From there, it would destroy anything in its way, planets included, til it reaches the sun. From there, the kinetic force would be so powerful, that the explosion would cause the sun to go supernova.

Since the comet was full of his magic, he controlled the expansion of the super nova to where it would impact his foes. Of course, since it was his magic that controlled the super nova, he could survive the experience with no worries. The real tricky part was destroying his enemies without taking the planet with it. This was the first time he's ever used it, yet he had been able to maintain adequate control over the spell, thanks in no small part to the knowledge of it being given by his mother.

Jenova.

The world treated her as a monster. She was called the 'Calamity from the Sky!' Shinra used and experimented her body to no limits, even using her own blood to make the SOLDIERs that served the power company so well, even him. Now she was most likely dead. All thanks to Cloud and his pitiful friends.

"This is for you...Mother," he spoke in a soft, cold voice.

"AAAAAGGGHHHHHHHHH!"

He reveled in the cries of his enemies as the super nova roasted their defences and bodies. Then, something strange started happening. At first, it felt like the air was blowing, but there shouldn't be any air where he's at since the flames fed off of it. Also, he noticed that the atmosphere itself was acting weird. For a moment, he could have swore that he could see it.

Was this a side-effect of using such a powerful spell? Did he go too far!? To his slight horror, near the epicenter of the still-going super nova's impact zone, he saw the very air itself tear like some cheap piece of fabric.

'What is going on? Is the spell so powerful that it's ripping space itself?'

The tear grew larger, revealing a dark red void on the other side. His instincts told him to run away, but to his worry, he found himself being pulled in. He tried to fly against the pull, but he's already lost much blood, and his energy was depleted from having maintained this form of his for so long. This current form was his right arm being that of a massive black wing while below his waist, his body was a main body part that had six large, white and feathery, angel wings keeping him up.

To more of his distraught, the rest of his energy began failing him and his body slowly crumbled away into black particles, leaving him in only his humanoid form. Why he was still in his normal fatigues of a large, black trench coat that was open in the front, with large, silver shoulder-pads and his always trusted sword, Masamune, he had no idea, but he wasn't complaining. If he was to be sucked into an unknown void, then he'd like nothing better then to have his sword with him.

Still, even in his human form, he fought against the current, hoping to ride it out. Fire from the explosion was being sucked at high speeds around him and into the tear. No, he's not going to go. Now that his main foes are out of the way, there's nothing stopping him from conquering this world.

"Son."

His eyes widen and he starts looking around, not sure if what he heard was real or not. It was his mother's voice in his head. Jenova's voice. But where? A lump of flesh about half his size flew by him towards the rift. His sharp, bluish-green eyes narrowed his vision and the object came into focus. A pale skinned woman with white hair.

'Mother.'

He sprouts a black, feathery wing from his back and it catches the current, snagging him towards the tear at high speeds. He easily covered the distance b/w him and his mother and grabbed onto her leg. During her defeat, she'd reverted from her synthesis form, that looked like her uppoer body was attached to a giant skull with tentacles, back to her more human form as well, though when the swordsman saw the physical state she was in, his anger grew.

There were deep wounds over the majority of her pale body, likely caused by sword slashes. She was missing her right leg and arm as well. Along her abdomen were numerous bullet wounds, likely from that massive black man's grafted gun. Along her delicate face were numerous bruises and her left eye was swollen shut. It looked like Tifa Lockhart did a real number with her fists.

As he was trying to fight against the pull of the rift, a small telepathic whimper sounded throughout his head. He looked down at his mother to see her bright pink eye looking up at him. They didn't say anything to each other, but he didn't need to be told what she was feeling. Being beaten to near death and now in danger of being sucked into some dark void, she sent out a feeling she'd never done before.

Apprehension.

She wasn't sure of her fate. Like any being, including Sephiroth himself, she didn't want to die. It was the most basic and most common fear among any sentient being. Jenova, being possibly hundreds of thousands of years old, was no different.

With a loud shrilling scream, the tear widened and the pulling force quadrupled. Sephiroth knew he couldn't fight it with his current level of strength. He'd used too much energy in his fights and using the SuperNova spell. He was never one to be frantic and fret over dire situations, not to say he's never been shocked a few times, so his face and mind remained stoic. One could even say he was at peace.

He withdrew his wing and let the force take them both. Sensing the confused expression of his mother touched him. He put up a good, convincing front to ease her thoughts.

"Don't worry, Mother. If we go, we'll be together," he spoke in a calm, deep voice. "And when we arrive to wherever we're going, we'll start a new world. No one will stop us from achieving your ambitions."

His pale-green eyes met her bright pink ones and he and she soon relaxed. Afterall, she'd never been this close to dying before. She was always so much more powerful then any other being. Yet somehow, despite her power, and her defeat at the hands of a group of humans and a dog, her son's gaze and words brought her comfort.

Forgetting all about her impending doom, she focused the rest of her magic to fuse with Sephiroth's to act as a layer of protection. It was a much weaker version of her magic she used to put herself into hybernation while traveling from planet to planet, galaxy to galaxy. This was just a safety precaution in case they ended up in space. She was sure Sephiroth couldn't survive in that environment without some form of protection. If they were lucky, they wouldn't be in any need of her magic shell.

Sephiroth was curious about the purpose of the magical shell that formed around them. It looked sort of like a cocoon. It was definately his mother's magic. Even in death, she wants to protect him, like he would her. The two closed their eyes as the magic did it's job and started to preserve them. In this, they would be protected from all the elements of nature, including zero oxygen and aging. They will not awake again till they enter a safe environment.

As the pink, egg-shaped pod passed through the void, the explosion from the actual SuperNova spell soon died down. When it ended, the rift closed. There was no trace of anything. No FFVII group. No signs of battle. Just a giant crater that covered a tenth of the planet while the rest of the planet was spared since the spell lost its source of power, aka Sephiroth.

(Back in the Underworld)

Many believed that God and his angel army were making an all-out assault on the Underworld. What other being could possess so much power as to distort the very sky of Hell? When the sky rip open, revealing a bright, orange and yellow light, it looked like a sun was crashing into their world. Many devils panicked and running about or taking cover. The armies of Sirzech-Lucifer and the other Satans were gathering to prepare for what they believed was an attack by God's forces.

When the hole opened, massive streams of fire spewed out into the Underworld, igniting the very sky around it. Many of Hell's occupants were terrified, something that's ironic since it's just fire, but they could feel the power within it and whatever was on the otherside of the rift that was trying to get in. After a couple of minutes, the explosion started to dwindle. The rift began closing up. When people didn't see any attacking army, they were confused.

During the chaos, no one bothered to notice a strange pink object shooting from the hole. Actually, only two beings noticed the sudden surge of power that entered into their universe from out of nowhere. While one didn't care, the other, a black-haired girl, was curious enough to investigate. It sailed across the distance and disappeared over the horizon. The 'One-Winged Angel' and the 'Calamity from the Sky' have arrived in the Underworld, in a universe that was already experiencing war b/w Devils, Angels, and Fallen Angels, with the unsuspecting humans caught in the middle.

How with their arrival affect everyone?

Will they choose a side?

Will they immediately go to war?

And that's the prologue: I won't be surprised by any flames I get, afterall, I DID kill off Cloud and them. Sorry for any slight OOCness. Even more, I brought Jenova back. I never got to experience much of her in the games, even though she was almost the center of it all. You just didn't see her in the game except for when you fought her.

Since this is an AU (alternate universe), I made Jenova more human, like when she was in her tank in the mako reactor. This will help me write her better. I would love to hear everyone's thoughts and expectations for this story. Please let me know how you feel and what you might want me to do to make this story work. Also, I'm still working on trying to learn about the HSDxD world, so if I mess anything up, please be respectful about it and just let me know.

As for how the two arrives in HSDxD. It is said that Sephiroth's SuperNova attack is so powerful that it can shatter dimensions. 'Nough said. As for pairings or hook-ups, talk to me about any ideas, b/c I haven't thought much about them yet, but I am open to suggestions.

Thank you. Bane out.