The scene opened to a large castle structure, surrounded by a vast jungle, the sky was a pale yellow, this was one of the many worlds of light, and at its center stood this ancient temple. One of the oldest worlds after the chaos of the Keyblade War, and it stood on the borders at the end of the realm of light, meaning it was one of the worlds where heartless would emerge. However, the guardians of light had made such that this world was protected and used as an outpost of sorts.
At the main gate stood two guards, and pass them leading up the long staircase, a set of ten guards, five on each side stood firm, maintaining their post unless told otherwise. And at the top of the steps was a monk, he was dressed in ceremonial robes, sitting on a mat with two youths sitting on each side of him. Everything was cal, and simple but then the monk's eyes shot wide open as a sudden gust of wind blew as he rose to his feet. His students looked confused as their eyes were drawn to the main gate.
A pool of darkness appeared, it rose forming a gate as a horde of neoshadows burst from it, the guards raised their weapons as one sounded the alarm, the rest of men but two headed down to assist and the destroy the invaders. Their weapons had been enchanted with light-based magic allowing them to combat the heartless as this wasn't the first time they appeared in this world, but these were pureblood heartless, it was rare to see them in a world of light unless it was overtaken by the darkness.
"Send out a distress charm to Master Yen Sid, more heartless will appear." The monk told one of his students as they needed the guardians' aid to fight the sudden horde.
"But master-" The youth was going to protest when they heard a sudden scream, one of the guards was caught by his throat by a hand, a human-looking hand that reached out from the darkness.
"What in the world?" One of the guards paused as a hooded Sora slowly stepped out the darkness, his face hidden as he held the man who was twice his size and build up before throwing him across the gate, collapsing it as he did.
"Stop him!" Another guard shouted as some were busy with the heartless as Sora effortless avoided their attack, countering them with a block, and physical blows.
"Both of you, go inside and alert Yen Sid, no matter what happens don't leave the temple." He placed his hands on each boy's shoulder as they looked at him with worry but reluctantly retreated back within the temple doors as the monk then casted a spell on the building as a barrier formed.
Sora toyed with guards as they were trying to defend against the heartless and him while trying to protect their master. Surprisingly they were doing well with their enchanting weapons, It was then Sora causally walked over to the one warriors fighting, drawing his keyblade and the movement he turned he was met with the blade being run threw his chest, his face twisted in pain. Their eyes locked as the man stared into Sora's cold and focused look as he quickly pulled the blade out of him.
The man held his wound as he stumbled back, blood dripping from his chest before it glowed as his heart released from him before his body vanished. One of his comrades looked on in rage as he yelled rushing at the youth, gripping his staff as he attempted to swing at Sora who first countered with his Oblivion, overpowering him and then slashing at his chest. Sora's attacks then became wild as he spun around firing a barrage of dark fire that hit both guards and heartless, not differing between allies and enemies.
The monk watched in both disapproval and despair as he slowly steps down the stairs, Sora effortless cut down everyone around him, several hearts ascended into the sky, the sound of bodies dropping before they faded away as Sora stepped over the first guard he attacked who was still unconscious on the broken gate, as he stabbed with his keyblade, twisting it as the last heart was released, his expression remained the same. He lowly snarled as he walked up the steps to meet the man, they both stopped with just a few steps between them.
"You. You're just a child, and already taken by the darkness… Those men were defending their home, you slaughtered them without remorse or mercy." He scolded Sora who just glared at him.
"I sense great conflict within you. The darkness has a strong hold on you, but I can still see a spark of light within in." He said taking one step closer to Sora.
"Light…" Sora simply growled as he rushed at the old man, a sudden shockwave as Sora's Oblivion was met by this man long katana.
"You're weapon… A keyblade from the dark, my weapon may not be a keyblade but it will be more than enough." He said pushing against Sora, as the youth gritted his teeth.
Spark flew as their weapons clashed, Sora unleashed several combos to try and overpower his foe, it was clear he was stronger but the monk was still holding his own against him. Now holding the blade with one hand, he gathered up light in his free hand and brought it to Sora's face as he was engulfed in a blinding light as he shouted, covering his eyes. That was a dirty trick, but it wasn't an attempt to blind him, he suddenly felt his area had changed, the light and shaped into a sphere, a prison that Sora was now trapped inside of with his Oblivion laying on the steps.
Once his vision cleared the boy began to look all over the place his hands against the bubble as he then saw the monk, who was slashing at the air, moving all over the place, gathering energy. Sora roared as he slammed his fist against the sphere, kicking and even headbutting it, trying to desperately break out. Three symbols made of light then surrounded each side of the sphere, he was attempting to use a sealing method to hold Sora until the guardians arrived and keep him contained. It required great focus, he couldn't move until the seal was complete and once it was Sora would be completely immobile.
He started chanting as the symbols were flickering like a light switch, and the sphere Sora was inside was becoming brighter, this made him more aggressive as he started ramming against the sphere, shouting threats and screaming at the monk, he felt his powers weakening. The monk's hand was trembling, sweat ran down his forehead as he continued chanting, just a little longer, the light never stuns so much, in the past this kind of power wouldn't had hurt Sora, but he was no longer a being of the light.
Sora then suddenly stopped moving, floating in the sphere as the monk slightly lowered his hand, the seal was almost complete. He was on the final verse of his chant, and he wasn't taking any chances with the seeker, it was then his attention was drawn back to the temple…
Inside the temple the older boy had down what his sensei had told him, he sent out a distress beacon through a large crystal that was embedded in the wall, it was then he heard the commotion outside, his little brother the other student clung to him as he looked around he then noticed a shrine that they often worship to and saw the set of old and rusted keyblades placed on each side of a statue of a unknown man and strange symbols. The older brother's expression changed as he then grabbed one of the weapons.
"Brother, stop what are you doing?" The younger boy asked him as he watched pull out the heavy weapon as he held it with both hands.
"I'm not gonna stay in here and let the master fight those monsters on his own." He told him as he then looked over to the door rushing towards it to help his master.
"But the master said to stay in here, brother please. Just stop!" He protested pulling against his brother to try and get him to stop.
"Master!" The older brother called out to him, opening the door as he was still restricted by the barrier around the building.
"I told you to stay inside!" The monk shouted, his eyes widened when he saw that he was holding, and Sora's hand twitched, and a wide grin appeared on his face.
"Weakling!" Sora was playing possum as he called his keyblade bringing it inside his sphere, he was never in danger, and he was would've been to escape any time.
With strong swing, he shattered the sphere and then destroyed the symbols, grinning as the monk had no time to react as Sora vanished and then re-appeared behind the monk, and with one violent swing he sliced the man in two, the boy watched in horror as the violent sight was reflected in his eyes, Sora then engulfed the monk in dark flames, incinerating him instantly. The boy cried in anger as he watched the man who raised him to die in a few moments, and with his master dead the barrier around the temple faded away.
Sora stared at the burning remains of the man before his attention was drawn to the boy, tears running down his face as his little brother ran out and immediately his older sibling stood in front of him. The younger student was confused until he saw the burning remains of their master, the expression his brother's face, he understood what happened. Sora looked at them before he then walked up towards them, the older male, gripped the rusted keyblade, he had to protect his brother from this man.
He shouted as he ran at Sora, his brother tried to reach out to him, tears ran down as he cried out of him to stop. Sora paused as he saw older boy charging at him, he then lowered his keyblade and with a swift backhand knocked the youth aside as he hit the ground hard. He tried to get to his feet as he saw the seeker was still heading towards his little brother, he couldn't let him get hurt, he heard his cries for him as he ran back up the steps.
"BROTHER!" He screamed as the older boy finally got to the top and was met with the horrific sight of Sora's keyblade was impaled through the boy's chest, the life from his eyes fading as a single tear ran down his face.
"NO!" He shouted as Sora glared back at, a slow grin formed on Sora's face as he sadistic pulled his key out of the younger boy's chest as he fell to the ground.
Sora looked at the destruction he had caused, the younger sibling's body had already faded and his heart released, while his older brother laid unconscious on the steps, one side of his face was covered in blood with flickers of dark energy, weakly gasping for air. Sora had taken something inside the temple, as he then pulled out a small device and pressed it as a holographic image of Xemnas appeared on the device.
"Report Sora." He emotionless voice spoke as Ansem looked at the image.
"It is done. The temple has been taken." Sora answered him.
"And the inhabitants?" Ansem asked as Sora glanced back to where the child's body was.
"Dead." Sora said to him. "Their hearts have returned to the darkness." He said as the heartless grinned.
"Most impressive, retrieve the artifact and return to the castle at once." He instructed Sora to come back.
"Yes..." Sora answered as he then ended the transmission, as the only survivor coughed as Sora looked back at him, walking down the steps before he then stepped on his head.
"Take that hatred, that despair... And let it fester inside you, remember that on this day, everything was taken from you because you're weak." Sora grinned as the boy looked up at with him with a look of hate that Sora knew too well.
"I'll... I'll kill you. Kill you... I swear to it." The boy tightened his fist as he watched Sora walked away but not before he fired a dark orb that zoomed into the air, as the skies went dark.
Sora had completed his first solo mission for the organization, it served as a test to see if he could handle a mission on his own and venturing back into the realm of light. Xehanort required an item that was kept hidden in this temple and also desired for it to be claimed by the heartless so that his adversaries could no longer use as an outpost. As the area darkened various dark gates opened as more neoshadows and shadows began to emerge all over the area as Sora opened a new corridor and left the wounded boy at the mercy of the darkness.