To write a compelling Espeon character, first focus on its psychic abilities. Describe how it uses telepathy to communicate with other Pokemon and its trainer. For example, it could send thoughts to its trainer during battles to suggest strategies. Also, give it a distinct personality. Maybe it's a bit mischievous and likes to play pranks on other Pokemon using its powers. Another aspect is its loyalty. Show how it would do anything to protect its trainer or its friends.
Since Espeon is often seen as an elegant and intelligent Pokémon, it might influence the behavior of Ash's more rambunctious Pokémon. It could teach them to be more strategic and calm. On the other hand, the other Pokémon might also introduce Espeon to a more fun - loving and adventurous side of life, changing Espeon's somewhat reserved nature a bit.
In the fanfiction, Biy turning into Espeon could mean a shift in its place in the Pokemon ecosystem. Espeon is a more evolved and powerful form. So, it might be targeted by stronger predators or rival Pokemon. Socially, among other Pokemon, it could face isolation as it is no longer the same as before. Also, its diet might change, which could affect the availability of food resources in the area where it lives.
Well, a great storyline might be Espeon getting involved in a time - traveling adventure. It could end up in a different era of the Pokemon world and have to adapt. Maybe it meets ancient Pokemon and has to use its talking ability to negotiate with them. Also, a story where Espeon is on a quest to find a rare crystal that enhances its psychic powers. Along the way, it meets various challenges and makes new friends. And then there's the idea of Espeon being part of a Pokemon detective story, using its intelligence and talking skills to solve Pokemon - related crimes.
Well, it could be due to a psychic bond. Suppose there's a strong psychic Pokemon or a powerful psychic trainer in the fanfiction. They might form a connection with Biy. Since Espeon is a psychic - type Pokemon, this bond could gradually change Biy's form into that of Espeon. The psychic energy shared between them could be the catalyst for this transformation, which would make for an interesting story arc.
The plot could involve Ash stumbling upon an Espeon that has lost its memory. Ash tries to help it regain its memories. Along the process, Espeon starts to remember bits and pieces which lead them to different locations. These places hold secrets and also some powerful Pokémon. Ash and Espeon team up with his other Pokémon to uncover the secrets and protect the area from villains.
Perhaps it's a way for the cartoon to add a comical element. Maybe the dog's dream was so wild it messed up its internal workings and resulted in a fart!
Hot manhwa usually have more intense plots and exciting action scenes. Cold manhwa might focus more on slower-paced character development and emotional depth.