It's possible that in a 'pokemon killed pikachu fanfiction', Pikachu could be killed by a natural disaster caused by a Pokemon. Let's say a Groudon goes on a rampage and its earth - shattering moves accidentally kill Pikachu. Ash would be devastated. Other Pokemon in the area might scatter in fear. This could lead to a story about how the Pokemon community tries to control Groudon and also how Ash copes with the loss of his beloved Pikachu.
Yes, in some 'pokemon killed pikachu fanfiction'. Maybe a group of evil Pokemon trainers force their Pokemon to attack Pikachu. For example, a gang of Team Rocket - like trainers with strong, aggressive Pokemon like Houndoom and Tyranitar. Pikachu tries to fight back but is outnumbered and eventually killed. This could then set off a chain of events where the Pokemon world is in shock and Ash has to deal with his grief while also trying to find out who was behind it.
One common reason could be jealousy among other Pokemon. Some Pokemon might be jealous of Pikachu's closeness to Ash and its popularity. So, they might plot against it and end up killing it. Another reason could be a misunderstanding. For instance, a wild Pokemon might misinterpret Pikachu's actions as a threat and attack it fatally.
One possible plotline could be that female Pikachu somehow ends up in the Naruto universe. Naruto, being the curious and friendly guy he is, befriends her. They then team up to face a common enemy that is causing trouble in both the ninja world and Pikachu's world. Another could be a more light - hearted plot where Pikachu's electric powers are used in the Naruto world in a comical way, like helping Naruto prank his friends or power up some of his jutsu in unexpected ways.
One plotline could be Naruto starts in his own world, discovers a portal to the Pokemon world, and decides to explore it. He might start as a novice Pokemon trainer and quickly rise in the ranks using his ninja skills.
For Pikachu, it could develop from being a bit reckless to more cautious. Maybe after getting into trouble due to its impulsive use of Thunderbolt in a wrong situation. And for Buneary, it could become more outgoing. For example, if it was initially shy around other Pokemon but as it spends more time with Pikachu, it starts to open up and make more friends.
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.
Well, in this fanfiction, if Ash turns into Pikachu, it might lead to a story where Pikachu - Ash discovers new aspects of the Pokémon world. For example, he could experience the world from a Pokémon's perspective, understanding their fears and joys more deeply. He might also have to deal with other Pokémon who don't immediately recognize him as Ash and react in different ways to this strange Pikachu.
One possible plotline is that a portal opens up between the Naruto world and the Pokemon world. Pokemon start appearing in the ninja villages and causing chaos. Naruto and his friends have to figure out how to send them back while also dealing with some ninja who want to use the Pokemon for their own gain.
A possible plot could be that Pikachu gets lost in a new forest. There, he meets a Sylveon. Sylveon helps Pikachu find his way back home. During their journey, Pikachu starts to develop feelings for Sylveon. Sylveon is also attracted to Pikachu's brave and friendly nature. When they finally reach Pikachu's home, they don't want to be apart and decide to stay together, facing any challenges that come their way as a couple.
One popular type of Pokemon Ash and Pikachu fanfiction might be adventure - based. For example, Ash and Pikachu could embark on a journey to a new and mysterious region filled with undiscovered Pokemon species. They might face challenges like difficult terrains and powerful, previously - unseen Pokemon. In this fanfiction, Pikachu's electric powers could be enhanced in some unique way, and Ash would have to strategize differently to overcome the obstacles.
Perhaps in the fanfiction, Percy's death is a sacrifice that was misinterpreted. The gods thought it was necessary for some greater good, but it actually throws the world into chaos. His friends then have to find a way to bring him back and restore order.