Well, perhaps Percy could be learning some new and powerful combat skills from Chaos. Maybe Chaos teaches him to manipulate chaos energy in unique ways for battle.
In a 'Percy trains with Chaos' fanfiction, the plot might involve Percy being taken to a special realm by Chaos. There, he could train with all kinds of strange and powerful beings under Chaos' guidance. He might learn how to better control his powers, like his water - based abilities, but in a more chaotic and unpredictable way. This could lead to him facing new and difficult challenges, and also forming unexpected alliances with other trainees in that realm.
One possibility is that Percy is chosen by Chaos to be part of an elite training group. Chaos sees potential in Percy's ability to adapt and his courage. During the training, Percy has to go through intense physical and mental challenges. He might learn about different forms of magic or combat that are not known in his normal world. And as he progresses in his training, he discovers more about the true nature of Chaos and how it can be both a destructive and a creative force.
It could be some of the other trainees who are jealous of Percy's progress and his special relationship with Chaos.
One possible plot could be Percy learning unique survival skills while training in Alaska. Maybe he has to deal with extreme cold, wild animals like bears or wolves. He could also meet local Alaskan characters who teach him their traditional ways of living and hunting, which in turn enhance his own training.
Perhaps the fanfiction could be about Naruto training Percy in stealth. Percy, being a demigod, often charges into battle head - on. Naruto, on the other hand, is a master of stealth. He could teach Percy how to move quietly and undetected. This would be a great advantage for Percy when he has to infiltrate a monster's lair or spy on the enemy. The story could show Percy struggling at first but gradually getting better with Naruto's guidance.
One possibility is that Percy trains his powers with the help of his friends. They could create special scenarios or obstacles for him to overcome, which in turn helps him to develop his powers further. His powers could also start to evolve in unexpected ways during this training process.
Well, it could be about Percy facing some new and unique challenges while training in isolation. Maybe he discovers a new power within himself during this alone time. He could be training to master a new weapon or combat style, like learning to fight with a double - edged sword that has some special powers. And he might encounter some mythical creatures that are drawn to his solitary training, which he has to fight off while still trying to improve his skills.
Maybe in the fanfiction, Percy is on the verge of death in a battle. Chaos, who has been observing Percy for a while, decides to save him and adopts him. Percy then embarks on a journey in Chaos's realm. He could be trained by powerful beings there and form new alliances. His relationships with his old friends from his previous life might be strained as they don't understand his new situation, but he also gains new friends who are loyal to him because of his connection to Chaos.
Well, in a 'Percy meets Chaos' fanfiction, it might start with Percy being pulled into a strange dimension where Chaos exists. Chaos could be a formless entity that communicates with Percy telepathically. Percy has to learn to understand Chaos' motives, which could be to reshape the world Percy knows in a more chaotic way. Percy then has to decide if he wants to fight against Chaos or join it in some way.
Well, perhaps Percy would grow up with a very different set of values and skills. He might be more wild and unpredictable, having been raised by Chaos. Maybe he'd have powers that are more primal and less bound by the normal rules of the demigod world.
Well, in most fanfictions where Percy trains in Tartarus, it often involves him facing extreme challenges. He might be learning to control new powers or just surviving the harsh environment. For example, he could be training to fight stronger monsters that lurk in Tartarus.
One possible plot is that Percy, now a girl, has to deal with the expectations society has for girls in that fanfic's setting. She could struggle with things like how she's supposed to dress or act. And there could be a whole new dynamic with her enemies too. They might underestimate her because she's a girl, but then she proves them wrong with her skills and courage, just like she did when she was male.