The next morning, Perseus heads to the arena in a hurry. He can't believe that the Allfather, Odin his grandfather spoke to him in a dream, telling him vital information. He must tell Sigrún of this. He enters the arena.
"Sigrún! I must speak with you! The Allfather has contacted me!" He exclaims.
Sigrún appears before him faster than ever before. "What has the Allfather told you? What must you do?" She asks frantically.
"He showed me a vision of what is happening in Asgard, and told me what I must do in order to take my rightful place in Asgard. He said I must lead and unite the Greeks and Romans on the battlefield in two wars sometime in the future. He did not say when, or who I am to fight, however." Perseus says in a resigned manner.
"We must train. You must get stronger and soon, I have to return to Asgard to rejoin my sisters. In the time between then, we train, and train hard." Sigrún states solemnly.
"I understand, Sigrún. Thank you for everything." Perseus says quietly.
Sigrún smiles softly, "Oh, come here you." She wraps him in a comforting hug. Perseus melts into her touch, and the wall between the two drops, and if someone were to walk in, they would see what looks like an older sister comforting her younger brother. Sigrún pats his back and runs her fingers through his soft raven black hair. They stay just like that for a few moments.
"I should go get the Greeks for our training." Perseus mumbles into her shoulder.
Sigrún nods, "Go and get them. But first, stand tall and proud. You are a prince, Perseus. Act like it. You are also a warrior. You must have the presence of both." She tells him proudly, "You have come a long way in a few years. And you will only continue to grow in power and skill."
Perseus stands tall and proud with newfound strength and determination in his eyes. He nods at her and turns on his heel to go get the Greek demigods for their training that they are going to do together for the next few months.
Time skip: 3 months later
If one were to approach the arena, they would see three teens locked in fierce combat. The sound of clashing metal and sounds of exertion would be the only things you could hear, and as well as see flashes of lightning. Perseus wields Worldender and his shield with mastery and deadly efficiency, as well as incorporating his immense endurance, durability, strength, speed, flight, and power over thunder lightning into his fighting. Thalia wields her spear and Aegis with great skill, utilizing the longer reach to her advantage. Luke is fighting with his sword of Celestial Bronze taking advantage of his inherited enhanced speed to his advantage. It's an all out brawl, and they are all at a stalemate, but slowly and surely, the two Greeks are tiring out.
Perseus slams his shield into the ground creating a literal shockwave sending the Greeks back with a shout, "Mighty Thunder!" A massive bolt of lightning drops from the sky and hits his blade. He redirects it to hit Luke, sending him crashing into the wall and knocking him unconscious. Luke has been removed from the fight. Only Thalia remains standing, and she is near exhaustion.
"Bring it on, Percy." She says with determination. On a silent signal, they charge each other. Both combatants are sparking with lightning. They move with incredible speed, and they become a blur of movement. Neither quite gaining the advantage yet.
They clashed with the might of the skies and lightning supporting both combatants. It was clear that this would be a battle of attrition: who will tire out first? Both warriors backed up to create space. Ona nonverbal agreement, they dropped their weapons and used their divine command of lightning, thunder, and air.
Perseus and Thalia both thrust their hands to the sky. Perseus gives a shout once more, "Mighty Thunder!"
Thalia gives her own cry, "Divine Lightning!"
The sky darkened with thunder clouds and two massive bolts of lightning dropped from the heavens responding to their respective wielder. Electric blue for Perseus, and cobalt blue for Thalia. Each thrust their hands forward, sending their lightning towards the other. The two bolts collide with each other in a brilliant flash, and it becomes a stalemate. Each child of the sky putting more and more power into their attack.
Perseus calls out, "The Norse gods are older than the Greek pantheon, making us more powerful!"
"That may be so, but I will give my all!" Thalia responds, her voice strained.
Thalia decides to put all of her remaining strength and energy into her bolt with a scream. Perseus narrows his eyes and puts half of his power into his attack and his eyes begin to glow and spark with lightning. His bolt doubles in size and overpowers Thalia's. In a bright explosion, Thalia flies back, depleted of energy and can't get back up.
Perseus stops calling on his powers and slumps over, sweating slightly.
"Well done, Thals! You got me to use fifty percent of my overall power." He states with a smile. He walks over and extends a hand to her and she takes it. He pulls her up to her feet, and they are only inches apart. They both blush slightly. You see, in the three months they've been training, the two children of the sky grew close to each other.
"It's a shame that we have to leave tomorrow." Thalia says softly and sadly.
"We'll see each other again. If there's anything I am sure of, it's that our paths will cross again one day in the near future." Perseus responds just as softly.
"It was nice getting to know you, Percy. You're a good guy." She says.
The Next Day
Luke, Thalia, and little Annabeth are standing by the door with bags of rations, medical supplies, and mortal money for the road.
Suddenly, Annabeth runs up to Perseus and hugs him fiercely. He hugs her back, noticing her sniffles.
"It's ok, little owl. We'll see each other again. I promise." Perseus says gently.
"I'm going to miss you Percy!" Annabeth says with a sniff.
"I know, but if you ever need me, any of you, you know where to find me. I have a gift for you Annabeth." He says calmly.
Annabeth looks up at him with wide eyes, "You have a gift for me?" She asks.
Perseus nods and pulls out a Celestial Bronze dagger. "Only the smartest of fighters can effectively use a dagger in a fight. I know that you are going to be very smart." He says and offers her the blade handle first.
She takes it happily with a big smile. "Thank you!" She says gleefully.
"Glad you like it." Perseus says with a smile.
Annabeth walks back to Luke and Thalia, and the three take one last look around.
"See you around, Percy. Thanks for the advice and everything." Thalia says gratefully. And with that, they walk out the door, and the next time they see each other, it will be under dire circumstances.
A/N: Sorry for the long wait! Life has been rough lately. So many of you want just Perlia, and many want just Pertemis. So I'm making the executive decision to do both. But the multi-ship will take time, and not be instant. Also, what do you think about a possible run-in with Mortal Kombat's Raiden? Or what about a team up with Shazam against Black Adam in the future as as a trial to receive the shards of Mijolnír?