A/N: This is my fic on Kingdom Hearts/Final Fantasy, though I have not beaten the game I have gathered sources from people who are very near. I do contradict the game (making the Final Fantasy characters coming from the world they were form in the games instead of all from the same world), so bear with me, and ENJOY!!!!!!

Disclaimer: I do not own Final Fantasy, Kingdom Hearts, or any other Squaresoft game I may give reference to.

Kingdom of Shadows

Chapter 1: Heartless Invade

Ryu practiced diligently with his new designed Gunblade, Fire Storm. The blade had the handle of a gun and was slanted in a diagonal angle. The blade was long and red, the bottom curved slightly. Through the middle was a long, straight groove going all the way through the blade. Ryu pulled back the blade to a charge position, concentrating hard on the target. "Flame Tornado!" Ryu yelled and pointed the end of his blade toward the black heartless coming strait at him. Immediately fire started whirling around the end of Ryu's Fire Storm, and then launched drilling through the quickly approaching heartless.

"Stop asking! I've told you it was swift and annihilated any of those stupid, black, heart-stealers." Said Ryu, apparently annoyed.

"They're called Heartless. Don't underestimate them!" Said the Professor

"Heartless?" Ryu questioned.

"The absence of heart. If only we could find the Keyblade Master." The Professor absently replied.

"Keyblade?" Ryu again questioned the Professor.

"A special weapon used for locking and un-locking things. The Keyblade Master we need locks the keyhole to the heart of a world. Until then we'll just have to stop them before they can do anything to hurt this world." The Professor replied.

"Keyblade..." Ryu half thought-half said.

"Die!" Ryu yelled as cut another Heartless to pieces. Whatever he did, though, they all just kept coming. Why him?! Why now?! Ryu was getting slightly annoyed. "Infernal heaven!" Ryu yelled. Immediately the whole gunblade started glowing red, Ryu slammed the gunblade into the ground. The heartless could feel the ground heating up. Ryu jumped into the air just as a cage of flames rose around and encaged the heartless in a sphere of fire. "Now take this! Burning slash!" Ryu said as he dove downward, with the gunblade over his back, ready to cut into his enemies. Right before he reached the ground he pulled the gunblade out of its place on his back slicing a wave of heat through the intensifying ball of flames. The ball exploded, leaving burning heartless to die. Ryu walked away hoping he wouldn't have to face another herd of the filthy heartless again today.

"Is the gunblade working correctly?" They Professor asked.

"Like I told you it's swift and powerful against the heartless. Oh, yeah, it handles magic and limit breaks AMAZINGLY, it's as if it were the first weapon that won't break." Answered Ryu very annoyed, even with the slightest hint of contempt in his voice.

"With the way you battle that is highly unlikely." The Professor teased.

"Shut-up!" Ryu exclaimed annoyingly.

"Ryu, come quick! Sector 3 is under attack!" The Professor's voice could be heard over the intercom in Ryu's bedroom."

"Sairi!" Ryu screamed through the streets as he dispatched heartless left and right "Sairi!" Then Ryu looked up and saw the source of the heartless entrance and, strangely enough, the heartless were returning back through it. Ryu stared a second longer then started running in the direction of the black ball hanging in the sky. He didn't know why, but he just knew he had to get there and NOW!! Ryu finally made it and looked up. He saw Sairi entering the black hole. He ran faster and faster in hopes to catch her. But he was too slow. He watched as she disappeared into thin air. Somehow he knew that the portal would never open again.

Ryu could hardly sleep, even though there were very few to no heartless left. Yet he couldn't sleep. All he remembered was Sairi. The one whom he always thought of was gone. The faint smile on her face as she waved her final good-bye, and rose up to leave that world. The realization that he would never see her again. The one he could always confide in and the one who would keep him under control, why did he have to see her go and where to? These thoughts filled his head and dreams until finally the Professor called him to the lab in sector 5.

"You don't look so good." The Professor stated with minor concern.

"Didn't sleep well." Ryu Replied.

"Well, I've done an analysis of the gateway yesterday." The Professor started.

"And?" Ryu said impatiently.

"It seems to have closed our small world out of the picture." The professor said sorrowfully

"You mean we're stuck here!" Ryu said outraged.

"Well, yeah." The Professor calmly answered

"Sairi.she.she left, I tried to follow her but I was simply to slow." Ryu said as he took no pity on himself and placed all the blame on himself. "If I was only faster I could help her now! Why am I so weak!? WHY?"

"It's not your fault she's gone, and it was her decision to go after all." The professor tried to clam Ryu down.

"NO! If I had been faster I'd still have her! We said we'd always be together, now because of my weakness she's gone and I'm not there to help her!" Ryu yelled placing more blame on himself every second.

Ryu wandered the streets aimlessly, taking care of the few remaining heartless that he came across. He had no real purpose. He looked straight ahead of him now and realized that all the heartless remaining were gathering together to create one being. Ryu sheathed his gunblade and ran to the spot of where the heartless were gathering. When he finally reached his destination they had already transformed into a HUGE giant, with a large space missing where a heart would be. Ryu grabbed his gunblade, and as he did the gunblade cracked, then shattered into a million pieces. "SHIT!" Ryu grabbed the small brown bag at his side and threw it at the heartless, at the same time he ran in the opposite direction hoping to get out of the blast radius in time. He had around eleven seconds if he correctly made the mineral bomb. Ryu made to the eighth district just in time. Locking the gate to eighth district just he thought back to his first gunblade given to him by his now dead father, his mother didn't want him fighting. His father had different feelings, and got Ryu a gunblade, possibly the hardest thing Ryu would use in his life, was what his father had thought. Even his father couldn't use one, but Ryu worked hard and wouldn't stop till he mastered it. Then Ryu worked it to hard and shattered it. The Dragonheart had been the most powerful thing he had brandished, but after shattering it he had to buy the blades that would last the strength he had.

Ryu had around three hours, before the stun bomb's effect wore off, but Ryu couldn't stop looking at his first Gunblade's handle and the perfectly pieced together blade. He remembered taking two weeks making it perfect. Ryu looked and looked, it was the only thing left he had of his parents and now he needed their help. Ryu often looked at the precious blade when he needed help. He usually also got an answer, but this time there was nothing. Ryu got up and went into his bedroom taking out the handle of his most recent Gunblade, and placed on the shelf next to the rest and made the label that he made for all of them. Date of departure, length of life and a small quote, this time he wrote "betrayal is harsh and this proves it." Ryu walked to leave and see the professor when the glass case behind him started glowing, he quickly turned around and ran up to it inside the blade was fixing itself. Ryu couldn't believe his eyes he watched as every crack and crevice was pulled back to gather. When every thing was completely complete Ryu picked up the blade it was stronger than before. "The Dragonheart! It's back!" Ryu stored the Dragonheart and grabbed another small brown bag.

Still frozen Ryu thought as came upon the giant heartless: Ryu unsheathed his gunblade and waited for the beast to move. The beast broke out in what sounded like a loud roar, Ryu took a step back and prepared for the battle to begin.

A/N: Well that's Chapter one: Heartless Invade! In the next chapter, Ryu finds hope in what once was long gone. Next chapter is: The Fight Between Dimensions!!!