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Markus stood in Camp Half-Blood days after helping Aphrodite retrieve her scarf. Since then, he had been training the campers at the camp like usual.

"Markus!" The Prince of Olympus turned to see his aunt Hestia, in her adult form this time, looking at him.

"What is it?" Markus asked with a frown

"Percy and the others are in trouble. They've just ran into Ares after escaping the Underworld." Hestia said worriedly. She knee Markus will get involved considering Ares has betrayed the family. Plus, the two brothers despise one another.

Markus' eyes widened before he took off into the air with speed that was faster than a speeding bullet, flying in the direction of LA where the Underworld was located.

(Los Angeles)

Percy Jackson grunted as he took another hit from Ares. He, Annabeth, and Grover had been set up by the God of War. They had went to the Underworld to get the Lightning Bolt from Hades, but Hades didn't have it and revealed they did. He also revealed his Helm had been stolen, unlike his brother he chose not to remind everyone of this like some spoiled best who's lost his toy. Once the three escaped the Underworld, Ares was already waiting for him.

"Percy!" Annabeth yelled in worry as Ares raised his sword with a bloodthirsty smirk on his face.

"Goodbye, cousin." The God of War said and was about to bring it down when something smacked into Ares, sending him crashing across the ground. The attacker was revealed to be Markus, who glared at Ares.

"Hello...brother." Markus growled as he summoned his sword to his hand and got into a stance. He looked at the questers. "Stay back, this is between me and him now. Ares has betrayed Olympus and I have been given permission to end him."

"Ha!" Ares laughed, getting their attention as he stood. "You may be the Prince of Olympus... BUT I AM THE GOD OF WAR!" He charged with a yell, as did Markus and their swords collided. They parried, blocked, and tried striking each other's blows. Markus ducked a punch from Ares and delivered a hard right to the gut that caused the War God to lurch forward before he growled and suddenly backhanded Markus across the ground.

"Ow." Markus muttered as he got to his feet, rolling out of the way to avoid a boot from Ares. "You betrayed our family z brother. All to satisfy your greed for war and your jealousy aimed at me."

"You don't deserve to be Prince, that title belongs to me!" Ares roared and the two brothers were back at it again. Markus jumped over Ares and slashed him in the back, causing him to yell out before he roared as he tried hitting a powerful backhand, which would snap a mortal's neck, but Markus ducked it and hit a spinning heel kick which sent Ares to a knee. Markus tossed his sword aside as he proceeds to lay in punch after punch to the face of the God of War.

Ares caught his fist and the two had a test of strength. Markus grunted as Ares began overpowering him. "You may be strong, brother." Ares said with a smirk. "But I am as strong as Hercules!" Ares hit a headbutt that caused Markus to stumble back before coughing up ichor when Ares hit a punch to the stomach, then grabbed him by the back of his head and slammed him into the ground. Ares then sends Markus flying into the sea.

The God of War chuckled darkly z thinking his uncle will deal with Markus considering Zeus and Poseidon have been at each other's throats since the theft. He turned his back when suddenly Markus burst out of the sea and tackled Ares straight to the ground, punching him hard with lefts and rights.

Ares covered up before punching Markus in the face, sending ichor flying. Markus grunted at the punch before he felt a sword impale the side of his stomach, causing him to yell in pain before looking to see Ares had his sword through the side of his stomach. Markus fell to a knee as Ares got to his feet. Ares laughed darkly as he proceeded to lay in punches to Markus' fade until more ichor was falling from the Prince of Olympus' face.

"JUST DIE!" Ares roared and with one more punch, Markus was sent off his sword and crashing across the ground, his clothes ripped to shreds from the battle. Ares chuckled as he approached, Markus holding his wound but Ares delivered a kick to it. "Oh little brother, it was always going to come to this. Me showing you your place... By ending your miserable existence!"

Suddenly Percy jumped onto Ares' back and lands some punches to the God of War's cheek before Ares tossed him off and would've stabbed him had Markus not suddenly tackled him to the floor, causing Ares to release Percy who backed off as Markus delivered a headbutt to Ares' nose, breaking it.

"My fuckin' nose!" The God of War yelled in outrage and pain before he was kicked aside by Markus, who feel to a knee as he spat more ichor out and held a hand to his wound. He needed to end this.

Annabeth went to go check on him but Markus held a hand out. "Stay back! Don't ever get in between a fight between two Gods!" He recalled his sword to his hand, gripping it tightly before running at Ares, takes a leap as Ares turns.

Times seems to slow down as Markus got closer and closer to Ares...

'Mom...forgive me for this.' Markus thought before he swung his sword and a slice was heard as he lands on his feet. Markus turned and saw Ares looking at the ichor flowing out the wound in his neck. He turns around and looks at Markus with wide eyes who shows the blood of Ares on his sword's blade. Ares' head then fell off and his body fades into golden dust, fading until whenever Fate decides to reform him.

Ares, the God of War, had been killed.

Markus stabbed his sword into the ground as he fell to a knee. Percy and the others ran over to him. "I'll be fine...I just need to get to Apollo."

"No need, little brother." Apollo suddenly appeared in his usual flashy entrance. "Pops sent me, he and everyone else were watching the fight though father and uncle Poseidon are in the Throne Room. Come on, I'll teleport you and Percy Jackson there, but first..." He turned to Annabeth and Grover. "Better send you two back to Camp first."

Olympus

"I am sorry, Mom." Markus, healed and recovered from his fight, said as he stood before his mother and father in the throne room. A few hours had passed since the fight with Ares and the death of the God of War. "He forced my hand and betrayed us."

"I know..." Hera said quietly, her fists clenching. Ares may have been a disappointing son...but he was still her son.

Zeus held his wife's hand before looking at Markus. "Son, because of Ares' death, his throne is empty. A new God of War is needed. Wars are part of human nature, even now wars are ending because of Ares' death. Yes, his ways were brutal, but he did keep wars from getting way too chaotic for the balance of the world. You're mother and I have spoken with the rest of the Olympians and...we all want you to become the new God of War, to finally join the Olympian council."

Markus was shocked as he looked at the throne belonging to the God of War. He...was chosen to become the new God of War? He didn't really know how to feel about that. He didn't want to become like Ares, a violent God despite the domain of War being violent. Yesz he wanted to become God of War at some point, but...he didn't really know what to say now.

"I..." Markus stopped himself as he considered this. War was needed, that was correct. There couldn't always be peace, that was the way of the world and human nature. If it was needed, then he will do it. He will not let the Earth go out of control because he didn't know what to do. "I accept. I will become the new God of War..."

Later, after the proper ceremony and Zeus declaring Markus the new God of War, along with Markus getting used to his title, the new God of War was walking in the direction of Aphrodite's temple.

He had to tell her...that he loved her.

He couldn't ignore his feelings anymore. He thought they were just lust based feelings because of how beautiful Aphrodite is, sure that's one of the reasons he's attracted to her but it wasn't the ONLY reason. Men, Gods, and women bedded her simply because she seduced them or they just wanted to get in between her legs.

Stopping outside the door of her temple, Markus took a breath before entering. He walked up several stairs and came into the large bedroom that is Aphrodite's chambers. (From God of War 3)

She was sitting at her makeup table, doing her hair. "Hello Markus." She said, turning to flash him that brilliant smile. "Congratulations on becoming the new God of War."

"I only wish it didn't require a family member dying. Ares and I hated each other...but he was still my brother." Markus said as he walked over to sit on the edge of Aphrodite's bed.

The Goddess of Love got to her feet and walked over. Markus didn't care that she was wearing an attire that revealed her breasts for all to see. (AN: What she wears in God of War 3)

"I can't imagine what you are feeling. I never killed a brother or anything like that." Aphrodite whispered z laying her head on his shoulder. Markus wrapped his arm around her shoulders, which made her smile brightly. "So, the depressing atmosphere aside...why did you visit?"

"To tell you...that, I'm willing to see if I am your onw true love...and that I love you." Markus said all in ones now knowing he can't take it back.

Aphrodite's eyes widened in shock. "Y-You love me?"

Markus nodded. "Yes. If I'm not your one true love, then I'll live with that and keep my distance-" He was silenced when Aphrodite kissed him on the lips.

And they felt it. Like they were both complete now. Markus kissed back immediately with passion, love, and desire, pulling Aphrodite onto his lap.

"It's you!" Aphrodite said once the kiss was broken. She could only feel complete like that if she had found her true love. She stared at him with eyes of love. "Make love to me."

Their lips connected and they fell onto the bed, their clothes flying off quickly...

And so Markus is the new God of War, has told Aphrodite he loves her, and the two have had sex, Markus claiming Aphrodite's virginity since she bathed in the waters of Hera's sacred Bath.

Also, Markus' official theme is God of War by Tyr, great song.