Well, perhaps in the fanfiction, Ash fakes his death to escape from some sort of unwanted fame or pressure. He's been in the spotlight for so long, and he just wants a break. So, he devises a plan to make it seem like he's passed away. Then he could start a new life in a different region, maybe with a new identity, and train Pokémon in a more peaceful and private way. He could also use this opportunity to learn more about some rare and elusive Pokémon without the media or his fans constantly following him.
His Pokémon, like Pikachu, would surely be important characters. Pikachu might be the first to suspect that Ash is not really dead and start searching for him. Misty and Brock could also be main characters. They are Ash's long - time friends and would be deeply affected by his supposed death. They might be the ones to uncover the truth behind his faked death and help him in his plan, or they could be completely in the dark at first and then gradually figure things out.
Misty and Brock could be important characters as well. They have been with Ash for a long time. They might be deeply affected by Ash's supposed death and be the ones leading the search to find out what really happened.
The Death Eaters might think they've won at first. There could be chaos and fear among the good wizards. But it could also lead to a secret resistance growing stronger.
In some versions of such fanfiction, Ash fakes his death as part of a master plan to stop an evil organization from achieving their goals. He stages his death in a way that makes the organization believe they are safe, but in reality, he is working behind the scenes, gathering evidence and allies. His friends initially mourn his loss, but as the story unfolds, they start to suspect that something is not right and eventually figure out his plan.
One consequence could be that his friends are devastated at first. They might go through a period of grief and self - blame for not being able to protect him.
For Ron and Hermione, they would likely be devastated at first, thinking they had lost their best friend. But then they might start to suspect something when they notice small details that don't add up. Ginny would be heartbroken and might become more determined to fight against Voldemort in revenge. The Order of the Phoenix would be in chaos, with some members losing hope while others might start to investigate the circumstances of his 'death' more closely.
Well, he might use some substitution jutsu. He could replace himself with a log or something similar at the crucial moment, making it seem like he's been killed.
One possible plot development could be that Naruto fakes his death to outwit a powerful enemy. He might go into hiding, secretly gathering information and allies to strike back at the right moment.
Another possibility is that the main antagonist is a group. It could be a secret organization that Naruto discovers is plotting something big. Since they are so powerful and well - connected, Naruto fakes his death to infiltrate them and expose their plans from the inside.