Well, clearly Raichu and Pikachu are the main characters. Sometimes, other Pokémon from their electric - type family or their friends like Ash might make an appearance in the background or play a minor role.
In some raichu x pikachu fanfiction, there might be a plot where Raichu has to protect Pikachu from a new, powerful electric - type predator. Raichu uses its stronger electric attacks and experience to keep Pikachu safe. This could involve a lot of action - packed scenes with lightning bolts flying everywhere.
A possible plot for this fanfiction could be that there is a lemon festival in the Pokémon world. Pikachu is excited to go but is a bit scared of the big Raichu that are usually at these events. However, a friendly Raichu takes Pikachu under its wing and shows it all the amazing lemon - related things at the festival, like lemon - flavoured Pokéballs and lemon - patterned scarves. As they explore together, they become the best of friends and have many adventures during the festival.
One possibility is that Ash has to quickly adjust to Raichu's new power levels. Raichu might be a bit more independent compared to Pikachu, which could lead to some initial clashes in their teamwork. But in the end, they could become an even more formidable team, with Raichu's increased strength allowing them to take on tougher opponents in battles.
One creative way to incorporate the lemon element is through the environment. Imagine a lemon - themed forest where Pikachu and Raichu live. The trees are lemon - shaped and the fruits are super - sized. The lemon - scented air could have different effects on their abilities, like making them faster or more perceptive. Also, the lemon could be part of a riddle or mystery. For instance, there could be a hidden treasure that can only be found by following the scent of a very rare lemon.
It would be really exciting. In the fanfic, Ash might be a bit hesitant at first because he loves Pikachu as it is. But when Pikachu decides to evolve, it could be a powerful moment. Maybe Pikachu evolves to save Ash from a super - strong enemy. And as a Raichu, it would have new abilities and a different appearance, which could lead to new adventures for Ash and his evolved Pokemon.
The fanfic could show Pikachu evolving during a big battle. When the situation seems hopeless, Pikachu might suddenly feel a surge of energy and start to evolve. As it evolves into Raichu, the battlefield would be filled with a bright light. And then Raichu would come out, more powerful and ready to turn the tide of the battle.
Personally, I think it's a creative interpretation within the Pokemon fandom. It allows fans to explore different relationships between the characters in a way that might not be shown in the official Pokemon media.
I'm sorry, but I don't have specific pikachu x raichu yaoi fanfic to recommend. You can try searching on some fanfiction platforms like Archive of Our Own (AO3). They have a large collection of fan - made stories, and you might be able to find what you're looking for there.
It could speed up his journey. With Raichu's greater power, Ash might be able to win battles more quickly and move on to more challenging regions or opponents.