In the world of fanfiction, Percy could go on a self - discovery journey. He could travel to different places that hold significance in his past or his family's history. Along the way, he might encounter other beings or forces that offer him new powers or insights. This would help him grow stronger both physically and mentally, and he would be able to face his former friends with new - found confidence, whether to forgive them or to make them pay for their betrayal.
One common plot is Percy being framed by his friends for a crime he didn't commit. This often leads to him being hunted by other demigods or facing exile. Another is his friends siding with his enemies for power or personal gain, leaving Percy alone to fight against the odds.
First, you need to know the characters well. Read the original books multiple times to understand Percy, Annabeth, and their friends' personalities, quirks, and backstories. For example, Percy is brave but also has a sarcastic side.
Some of his friends might be very wary at first. After all, Hades has a rather dark reputation. But if Percy can show them the good in Hades, they might gradually come around. For example, Annabeth might be initially skeptical but after seeing how Hades helps Percy in some way, she could start to accept the friendship.
He would be heartbroken. Naruto values friendship above almost everything. At first, he might not believe it and try to reason with his friends.
Perhaps she's a sister who was thought to be dead but actually survived. She could have been corrupted by the experiences she had while being 'dead'. When she returns, she blames Percy for not saving her properly. This false blame leads her to betray Percy. She could start spreading rumors about Percy being a coward or a bad leader among the demigod community.
The sister could be under the control of a powerful god or goddess who has a grudge against Percy. She might be forced to betray him. For instance, she could lead Percy into a trap set by the god. She could lie to him about a mission, saying it's a rescue mission but in fact it's a trap where the god is waiting to take revenge on Percy for some past deeds. This would be a really heart - breaking betrayal for Percy as he trusts his sister.
Ash could respond in different ways. He might try to confront his friends immediately to get an explanation. If the betrayal is really bad, he could cut them off completely and focus on his own goals, like becoming a better Pokémon trainer. He would also probably have some internal struggles, as he has memories and experiences with these friends that he can't just forget.
He probably feels extremely hurt and confused. Betrayal by friends is a very painful experience, and Bell might question his own judgment in trusting them in the first place.
Ash would probably be initially shocked. He has always trusted his friends, so the idea of betrayal would be hard to swallow. He might try to talk to them, to find out why they are doing this.
He might be extremely hurt. Harry could go into a state of shock and disbelief at first. He may isolate himself, not wanting to trust anyone else for a while.