All the Harry Potter characters belongs to J.K. Rowling and all Percy Jackson characters belongs to Rick Riordan. I only own the plot of this story.
"Perseus, you are not the hero. If you go into the throne room to face Kronos, you will not come out of that room."
As Percy began climbing over a huge pile of broken stone and twisted metal to get inside hall of the gods Mount Olympus with Grover and Annabeth, the only thing going on his mind other than that he was going to fight a mad titan hell bent on destroying the cradle of western civilization was the shocking revelation by Rachel a couple of hours ago. Percy could not believe his ears that the Fates could bitch slap him like that at the final moment of their struggle against Kronos. After facing countless life or death situations from the moment he joined camp half-blood to this day after four years when after all of their hard work his friends and he was finally beginning to believe that may be he was the one from the great be he truly was the hope for their world of finally stopping the rampage of the mad titan king and save Olympus. Still he was determined to face Kronos even after knowing that the probable outcome of that face off was not going to be good for him.
As they reached the throne room they could see the king of the titans standing in the middle of the room with another titan, arms wide as to grasp every corner of the room with his laughter booming louder than ever. Suddenly he turned to the gates as they were just entering the throne room.
"Come forth my dear demigods, son of Poseidon and daughter of Athena, are you going to be the first to bow before me, to congratulate me on my regaining of my kingdom? Or are you going to be the first to fall under my reign?"
In the dying glow of the hearth a cruelty could be seen in Luke's face that could only come from the king of titans. Previously when Luke tried to stop Percy and his friends he had not displayed such cruelty and coldness. Annabeth made a sound like someone kicked her in the stomach.
"Ah Annabeth, were you perhaps expecting to find your friend Luke here?" taunted Kronos, "He had so much affection for you. You know when he offered me his soul to house my essence, his only condition was that you should not be harmed. Can you really harm your dear Luke who is still trapped in this body?"
"Don't listen to him Annabeth, He is Kronos, not Luke. And Luke was as evil as him to do the things he had done."
"Shall I destroy you first then, Jackson?" Kronos asked. "Is that the choice you will make-to fight me and die instead of bowing down? Prophecies never end well, you know."
"I would face you with my blade unlike the coward you are. You could never have the courage to face me in a fight."
Kronos laughed and unsheathed Backbiter, Luke's old half steel half celestial bronze blade, "I don't even need my scythe to end you Jackson."
Next to Percy Annabeth suddenly gasped seeing the blade. "Percy, the blade!" She unsheathed her knife. "The hero's soul, cursed blade shall reap!"
Before Percy could ask Annabeth what did she mean Kronos charged them. He was like a whirlwind. Percy could barely stop his blows from ripping Riptide out of his hand. Annabeth and Grover were busy fighting the other titan. Percy could hear Grover playing his reed pipe, a tune that filled him with warmth and courage, reminding him the calm seas, somewhere far away from all the war and killings.
Percy could see vines growing from nowhere and trying to bind the two titan. While the other titan was hindered by the vines allowing Annabeth more opportunity to stop him, not a single vine could come within ten feet of Kronos before being sliced to confetti. The king of titans was like a whirlwind, seemingly capable of dealing with ten opponents at once.
"Hah! Is this all you have got Perseus? The hero of Olympus! May be it was all a fluke. May be your friends did all the hard work for you and you grabbed their fame," sneered Kronos as he pushed Percy back to the throne of Poseidon. "May be I'll start remodeling of Olympus by destroying your father's throne first."
Suddenly Percy could feel the strength of the oceans as his back touched the throne of his father. He pushed Kronos back for the first time and slashed Riptide across the arm of the titan. He slashed with such a power that the celestial bronze vambrace was nearly cut through. Kronos stamped his foot and all the rubble littered around the throne shot up to Percy, who could only dodge them by rolling to the side.
"Now that's more like it Perseus. Struggle with all you have got and then maybe I will spare your mortal mother from torture and grant her a merciful death."
"You will never ever touch her!" roared Percy and renewed his attack on the titan king. But for every move that Percy made the titan king matched him with even more power. Percy knew that he could not hold back the titan for much longer even with the power of the oceans.
In another corner of the room Annabeth and Grover was going hard at the other titan. Thick vines were starting to bind the titan as Annabeth slashed at his hand with her dagger to remove the staff the titan held. In desperation Percy tried to stab Kronos by jumping over him and then jabbed to his side but Kronos was ready for him. He countered the strike and then using the very first move Luke taught to Percy disarmed him. Riptide skittered across the floor of the throne room to an open fissure.
"Now Percy Jackson it is time for your journey to come to an end." Said Kronos as he raised his sword to stab Percy.
"STOP!" Annabeth flung herself from nowhere between Percy and Kronos. The titan halted at this sudden intervention. "What are you doing foolish girl? You want to die first?"
"This is not the way Luke," she said, gritting her teeth, "I understand now. You have to trust me."
Kronos roared in rage "Luke Castellan is no more! This mortal shell will burn as I assume my true form," and slashed with Backbiter but somehow Annabeth caught the strike on her dagger hilt. Percy could not believe his eyes that Annabeth could stop the strike of Kronos. As Annabeth stepped in for better leverage there was a moment when she stood face-to-face with the titan king.
Kronos pushed against her, trying to dislodge his blade, but she held him in check, her arms trembling as he forced his sword down toward her neck.
"Your mother," Annabeth grunted. "She saw your fate."
"Service to Kronos!" the Titan roared. "This is my fate."
"No!" Annabeth insisted. Her eyes were tearing up, "That's not the end, Luke. The prophecy: she saw what you would do. It applies to you!"
"LIES!" Kronos bellowed and pushed again, and this time Annabeth lost her balance. With his free hand, Kronos struck her face, and she slid backward.
Kronos loomed over Annabeth, his sword raised. Blood trickled from the corner of her mouth. She croaked, "Family, Luke. You promised."
Percy somehow stood up and took a painful step forward but it was like trying to move while holding up the sky. Grover was back on his feet, over by the throne of Hera where the other titan was down wrapped in vines, but he seemed to be struggling to move as well. Before either of them could get anywhere close to Annabeth, Kronos staggered. He stared at the knife in Annabeth's hand, the blood on her face. Then he gasped like he couldn't get air. "Annabeth . . ." But it wasn't the Titan's voice. It was Luke's. He stumbled forward like he couldn't control his own body. "You're bleeding…"
"My knife." Annabeth tried to raise her dagger, but it clattered out of her hand. Her arm was bent at an unnatural angle.
Percy surged forward and scooped up her knife. He knocked Backbiter out of Luke's hand, and it spun into the hearth. Luke hardly paid any attention to anybody but Annabeth. He stepped toward her but Percy put himself between Luke and Annabeth.
"Don't touch her," warned Percy as he stood with the knife aimed at Luke's heart.
Anger rippled across his face. Kronos's voice growled: "Jackson . . ."
Suddenly his body started glowing gold. He gasped again. Luke's voice: "He's changing. Help. He's …. he's almost ready. He won't need my body anymore. Please…."
"NO!" Kronos bellowed. He looked around for his sword, but it was in the hearth, glowing among the coals. As Kronos tried to pick it up the sword just melted in the glowing hearth.
He was definitely glowing now, his skin starting to smoke. Percy raised the knife to strike but even now Kronos stopped the knife with his bare hands.
"You do not have what it takes to stop me Jackson. Nobody does. I will achieve my true form and bring down Olympus brick by brick. BRICK BY BRICK as I promised. You are not the hero Jackson everyone thought you stop try to be one and accept your fate to die by my hands."
"You are not the hero," Rachel had said. Percy just starred at the glowing form of Luke unsure about what to do to stop him anymore.
"Please," suddenly again Luke groaned. "No time."
If Kronos evolved into his true form, there would be no stopping him. He would make Typhon look like a playground bully. The line from the great prophecy echoed in Percy's head: A hero's soul, cursed blade shall reap.
Annabeth again somehow managed to stand up and limped towards the glowing form of Luke. "Please Luke fight him. I know that you can do it. Please fight him for me." She looked at Percy, "Percy, please give Luke the blade."
Percy could not believe his ears. Annabeth was telling him to hand over the knife to Kronos!
"Please," Luke groaned. "No time."
Percy handed him the blade and stood before him- defenseless.
Luke started to remove the side straps of his armor, exposing a small area underneath his left arm. As he raised the dagger to stab himself there suddenly his body started glowing even more and the voice of Kronos again sounded, "NOOOO! I REFUSE TO BE STOPPED LIKE THIS. KREIOS DO IT"
Suddenly an even greater glow almost blinded everybody. The throne room shook, throwing everyone feet. An aura of energy surrounded the fallen titan, growing brighter and brighter. Percy shut his eyes and felt a force like a nuclear explosion before everything went black.
Author Note: Yup instead of Ethan Nakamura the titan Kreios(Crius) accompanied Kronos to the throne room. And you will find out how this changed the whole game.