Percy could be paired with a new character, someone created specifically for the fanfiction. This new character could be a demigod from a different, less - known pantheon, adding an element of mystery and more chaos as they navigate their relationship. Or it could be a character like Thalia Grace. She's strong - willed and has a connection to Percy, so a make - out session between them during chaos could be an interesting exploration of their relationship dynamics.
Obviously Percy Jackson himself could be one of the characters. Annabeth Chase would be a likely partner as they have a long - standing relationship in the Percy Jackson series. Another possibility could be Nico di Angelo. He has a complex character arc and could be involved in a make - out session in a story that explores his relationships in a more romantic context during a chaotic situation.
One plot idea could be that in the midst of chaos, Percy and his partner find a moment of peace and connection during the make - out session. Maybe they're in a dangerous situation, like in the middle of a monster attack, and their closeness gives them strength. Another could be that it's a dream - like sequence where the chaos around them is a manifestation of their inner turmoil, and the make - out is a way to ground each other.
The Titans could be potential enemies. Even though they've been defeated before, some of them might be resentful and see Percy as the Chaos Champion as a new threat to their possible plans of a comeback. Kronos, for example, might have some of his essence lingering and try to possess other powerful beings to go against Percy.
There could be a chaos spirit named Eris. Eris could be a mischievous character who both helps and hinders Percy on his journey with chaos. She might have the ability to shape - shift into different forms related to chaos, like a swirling vortex of dark energy.
Perhaps some of the minor gods who are tired of the traditional power structure in Olympus could be Percy's allies. They might see his rebirth as a son of Chaos as an opportunity to shake things up. Also, any being that has a connection to the concept of change or new beginnings could potentially side with Percy. This includes spirits of innovation or even some forgotten heroes who sense that Percy is the key to a new era in the world of demigods and gods.
Maybe they are on a quest in a lost, ancient city. After finding a powerful magical artifact that will help save the world, they are filled with relief and joy. In the ruins of a beautiful temple, they share a moment of closeness. The danger they've been through and the hope for the future combine to create a perfect time for a make - out session. Percy's sense of humor and Annabeth's intelligence would still shine through even in this romantic moment.
How about a daughter of Hecate? She could have magical powers that would complement Percy's skills. The Fates might bring her into Percy's life because they know that her powers could be crucial in future battles or quests. And then there's Calypso. She already has a connection with Percy, and the Fates could make it so that she becomes a more permanent part of his life, adding to his 'harem' situation.
Another great addition could be Circe. She has a lot of knowledge about magic and the supernatural. In the fanfiction, she could be an ally or an enemy. If she's an ally, she could teach Percy and Artemis some spells to combat the chaos - influenced threats. If she's an enemy, she could be working with the forces of chaos to try and gain more power.
Obviously, Percy Jackson is the main character. He is the one who becomes the soldier of chaos. His character development from a hero of the Olympians to a figure in the chaos realm would be a central focus.
A new demigod from a previously unheard - of god or goddess. Maybe a child of a minor deity who has some unique powers that could either help or hinder Percy in the situation of the collapse. For example, a child of Hypnos who can manipulate sleep and dreams, and their powers could be used to either give Percy visions of how to fix things or put him in a dangerous trance.
In this fanfiction, apart from Percy, we could see his friends from Camp Half - Blood like Tyson. Also, some of the teachers at Goode who might have a more significant role this time. There could be new demigods that Percy meets at Goode. And don't forget the gods or goddesses who might interfere in Percy's life at Goode in some way, for example, Poseidon could give Percy some kind of sign or power boost when he is facing a difficult situation at school.