Hey guys. I know I haven't wrote anything for god knows when but since I'm pretty much free(and bored), I decided to yet again, give it another go. So without further ado, this is yet another crossover; perhaps a more common one but nonetheless, I feel like this would be successful. Enjoy reading and please, leave a comment for any suggestions.

It was but a moment that the worlds crossed. Upon the incantations of the lost, two fates intertwined; a mere entertainment for the gods, how will this fare with the world's actors. I am but a chronicler; an observer to this events but if you are willing to stay, let me tell you of a story; a tale of perhaps and if's and a tale of standards and conviction.

...

They were ready. An invitation from the moderate faction was perhaps a chance they were longing for. It was but a matter of facing the enemy and putting an end to this. Mio pondered at this for a bit but with Toujou Basara with him, for sure, she can do anything.

"Don't worry, Mio. I will protect you."

His words were more than enough to calm her senses.

"Yes. And I will do my best as well to protect Basara." Yuki followed-up with a sneer on her face.

"G-Geez, stop ruining my moment!" Mio angrily interjected. Nevertheless, a giggle escaped her mouth. A symbol of relief that the people she cherished will be with her through this ordeal. With the portal still emitting its purple color, the two of them stepped together. It was but a world unknown to them but they were more than confident. Holding on to Basara's sleeves, the Demon Princess stepped in to the portal.

...

"W-What is happening.." The teacher can only utter her words as the portals around her room emitted a malicious glow. Why would they be transported to some unknown land?! Has there been a mistake?!"

"I am not sure Milady but these are the re-"

"I do not care about the reports!" She exclaimed while smashing her glass to the floor. Everything was crumbling before her. Remembering the boy's warmth, she could only sigh.

"May the gods guide your way, Basara." With a pained expression, she looked outside, a worried smile painted across her face.

...

"Ha, is this Ddraig's power? Is this a joke or are you underestimating my power, Hyoudou Issei!"

"D-Damn..you..y-you..you will not harm Rias.."

Despite, uttering these words, the young boy knew that he was at its limits. He could only curse himself for being...weak; having the strongest dragon inside him didn't mean anything if his own power would not be able to follow through it but he was willing to give everything, even his life for the girl he loves.

"Vanishing Dragon Vali, I will go ahead and take your power!"

A mixture of white and red flooded the area; coupled with the screams of agony, it was enough to shatter a human's mind into pieces but he would rather endure this than losing the love of his life. For Rias Gremory, he will do anything and everything.

"You will pay Vali..You wil-!"

Feeling a surge of power within the area, Issei stepped back and to his surprise, also did Vali.

"What is.."

"Brother.."

T'was not the dragons alone that noticed this unstable surge of energy. Sirchzechs' gaze turned into a more serious manner. Raising his hands, he immediately placed several layers of protective spells around the Gremory and Sitri group.

"This is.."

Hearing a sound akin to lightning, the ground emitted a purple glow and within moments and after a few crackles and sparks, out came a man wielding and sword. His eyes glowed green and it seemed like he was struggling. Behind him are several girls who seemed exhausted.

"You..you will not harm them.." The man spoke with bared breath.

"W-What is.."

"B-Basara..Oniich.." The girl with flaming hair tried speaking but it seemed like her injuries was bit too much for her to continue.

"This is.." Like lightning, Rias' brother approached Vali.

"Vanishing Dragon, I would like for you to retreat for now."

"Ha, so even the king of the underworld wishes to take me on huh?" Vali responded, his smirk growing more insulting.

"Yes, we would be retreating so let's not show off here, Lucifer." a rough voice followed.

"Bikou, What are you doing here?" Vali asked while his eyes are fixed at Sirchzechs.

"Orders from the top. We would need to retreat for now."

"Tsk..very well then.." Pointing at Issei and the man covered in white glow, the Vanishing Dragon declared.

"We will continue this at another time. You, your power seems to be overflowing. I would like to defeat you someday."

"If you..do..anything..I will..kill.." The man muttered under his breath.

"Interesting..interesting..I will look forward to that day that will fight each other to death. Issei as well!" With a flick of his fingers, Vali, together with the man called Bikou disappeared and as soon as he sees this, the man fell on his knees, unconscious.

"What in the world.."

With Azazel descending, he checked on the red-haired girl who was holding on to the man's foot. Checking on her pulse, he suddenly showed a surprised expression.

"A devil but..its not like ours..its..different."