In a more complex story, there could be a curse placed on Pikachu by an ancient Pokemon spirit. This curse gradually weakens Pikachu over time. As it gets sicker, Ash tries everything he can to find a cure. But in the end, Pikachu's body gives out. Ash is left to deal with the grief, and he embarks on a journey to find a way to break the curse and bring Pikachu back.
Perhaps there's a ketchup - themed villain in the story. This villain wants to cover the entire Pokémon world in ketchup for some strange reason. Pikachu, being the brave little Pokémon it is, decides to stop this villain. Along the way, Pikachu discovers that the ketchup has some sort of magical property that can either help or hinder it in its quest. It could be a story of Pikachu using its wits and electric powers to overcome the ketchup - obsessed villain and save the Pokémon world from being drowned in ketchup.
Maybe in a fanfiction, Buneary and Pikachu get lost in a mysterious forest together. They have to rely on each other's skills. Pikachu uses his electric attacks to fend off threats, while Buneary uses her ears to sense danger and find a way out of the forest. It's a story of friendship and survival.
One popular storyline could be about Togedemaru and Pikachu teaming up to save their Pokemon friends from a natural disaster in the forest. They use their unique electric abilities in creative ways to rescue everyone.
A more complex storyline could involve Snivy and Pikachu getting lost in an unknown region. They have to rely on each other to survive. Pikachu uses its electric powers to start fires for warmth and Snivy uses its vines to gather food. Along the way, they meet new Pokémon species and form alliances to find their way back home. This journey not only tests their survival skills but also their friendship.
One possible storyline could be Sylveon and Pikachu teaming up to rescue a group of baby Pokemon from a powerful and evil trainer. Sylveon could use its ribbons to distract the trainer while Pikachu zaps the cages open.
One interesting storyline could be Pikachu and Snivy teaming up to rescue a group of lost Pokémon in a mysterious forest. Pikachu's electric powers and Snivy's grass - type abilities would be useful in different situations during the rescue mission.
One possible storyline could be that Pikachu and Eevee start off as rivals in a Pokemon trainer's team. They compete for attention and resources. But then, when facing a powerful common enemy, they realize they need to work together. Their combined electric and various - type moves prove to be a great asset in battle.
One interesting storyline could be Pikachu and Buneary teaming up to rescue other Pokemon from an evil trainer. They use their unique abilities, Pikachu with its electric shocks and Buneary with its cute yet powerful kicks, to outwit the bad guy.
Ash would be completely devastated. Pikachu has been his closest companion since the start of his journey. He would probably go into a state of shock at first, unable to believe that Pikachu was gone.
One possible storyline could be that Danny sacrifices himself to save the world from a powerful and evil ghost. Maybe he uses all his energy in a final battle and fades away, leaving his friends and family to mourn. Another could be that he's tricked by a villain into a death - trap that he can't escape from.