In this fanfiction, Percy might use his powers and leadership skills to bring order to the camp. Maybe he reorganizes the training schedules, making them more efficient for the demigods to improve their skills.
Well, in this fanfiction, Percy controlling the Styx could lead to some really interesting plot developments. Since the Styx has such a significant role in Greek mythology, it could attract all kinds of mythical creatures and gods. Percy could find himself in the middle of a power struggle as different factions either try to use him or stop him. He might also use the Styx to travel to different realms or access hidden knowledge. And perhaps he would have to face the consequences of messing with such a powerful and sacred entity, like facing the wrath of Hades or other underworld deities.
He might go on a solo adventure to discover more about his powers. He could encounter new mythical creatures that he hadn't seen around the camp. Maybe he'll meet some other demigods who are on the run or have their own secret quests.
Well, in this fanfiction, Percy might meet some new characters early at the camp. Maybe he discovers a hidden part of the camp that others don't know about yet.
Perhaps they were caught in a compromising position while having a private moment. This could lead to all sorts of awkwardness among their friends at the camp. They might have to face some teasing or even get in a bit of trouble with the camp counselors for not following the rules.
In fanfiction, their departure from Camp could be due to a prophecy. They might be the only ones who can fulfill it. So, they leave the safety of Camp and embark on a journey filled with challenges. Along the way, they could face their inner demons as well as external threats. They might have to make difficult decisions that test their loyalty to each other and to the demigod community. This could involve choosing between saving a friend or following the path of the prophecy.
Poseidon could arrive to warn Percy about an impending danger in the fanfic. He might bring along some underwater allies to help Percy and his friends at the Camp. It could be a really cool scene where Poseidon shows off his power, like creating a huge tidal wave just outside the Camp boundaries to make a point. And Percy would be both proud and a bit intimidated by his father's presence.
Well, it could be that Percy leaves camp and discovers a new power within himself while on his journey. He then uses this power in a very public way, like in a big sports event where he showcases superhuman abilities that no one has ever seen before. This could lead to him becoming famous as people are always fascinated by the extraordinary.
In this fanfiction, Percy is the main one in control. But characters like Chiron, the centaur mentor, would also play a significant role. Chiron has a wealth of knowledge and experience, and Percy would likely rely on him for advice on matters of the camp's history and traditions. Also, there could be some antagonist characters within the camp who don't like Percy's new rules and ways of controlling, which would add some conflict and drama to the story.
In a more comical fanfiction, Naruto might accidentally control Anko's eating habits. Let's say he uses a new jutsu that backfires and instead of affecting an enemy, it affects Anko. So, every time Naruto thinks about a certain food, Anko starts craving it and can't resist. This would lead to some really funny situations as Anko tries to fight against this strange control while Naruto is desperately trying to figure out how to undo the jutsu.
One possibility is that Percy uses his time - controlling ability to prevent a great disaster in his world. Maybe he goes back in time to stop an evil force from being unleashed in the first place.