AN: Hello ShiraHitsugaya here. This is another crossover mainly Bleach, Kingdom Hearts and a few of my OC's. Boborus is the main villain from my original stories so I thought what he if he met other villains, thus Aizen and Xemnas.

Carpe Noctem

Prologue

"I offer up an alliance," a cold voice stated ringing out into the deep shadows that surrounded him. "We do seem to share quite a few of the same enemies." A slight pause followed the statement returning the room to its silent solitude.

"That's an interesting proposition," another man said as he walked out of the shadows that cloaked him. He was tall, clad in white with a mischievous smile plastered on his lips. The man's two faithful followers lurked behind him sticking to the shadows. "Sounds like fun," the one with a cruel grin remarked while the other remained quiet and thoughtful.

"So do we have an agreement?" the first voice asked. There was another short pause as the man looked back at his companions. "For now at least," he finally said his smile never wavering. "Good," the voice from the shadows exclaimed as he too came forward.

"My name is Boborus. Think of me as King of the underworld," Boborus held out his pale hand as a welcoming. The man in white hesitated before he took Boborus' hand. "Aizen Sosuke, Lord of Huceo Mundo," he answered. He shook the hand solemnly and then gestured to his companions, "They are Gin Ichimaru and Kaname Tousen." As mentioned the two men came over and greeted Boborus. Gin continued to grin and simple waved. Tousen bowed.

Aizen watched Boborus closely, regarding him in a curios manner. His calculating eyes finally settled on the darkness behind his new friend. Smirking Aizen said, "Since we are now all acquainted, why don't you have your friend in the shadows join us?"

Boborus didn't look surprised that Aizen had found his 'friend' even though he had earlier masked both of their presences, after all Aizen was extremely powerful he wouldn't fall for such small petty tricks. In response Boborus simple nodded.

A soft chuckle emerged from the shadows as yet another man joined their group. This man hand long silver-grey hair, odd orange eyes and a tanned complexion. He was wearing all black and carried an eerie air around him. He took his place next to Boborus, crossing his arms.

"And you are?" Aizen asked.

"Xemnas," the newcomer answered.

"He shares similar enemies with us," Boborus told them. "Anyways, I'll be contacting you soon." With that Boborus opened a portal and he and Xemnas left.

Aizen's smile broadened. "Things are going to get interesting."