I'm not sure specifically which 'sad shiny eevee story' you are referring to. It could be about a shiny Eevee that got separated from its trainer, or perhaps it was bullied by other Pokémon in the wild because it was different due to its shiny appearance. Without more details, it's hard to tell the exact story.
One possible main plot is that the shiny Eevee had a dream of evolving into a certain form, like Sylveon. However, it faced so many obstacles in its life that it couldn't gather the necessary items or experiences to evolve. It watched other Eevee around it evolve into their desired forms while it remained stuck, which made it feel sad and inferior.
Juantu's evolution trilogy included Ace Evolution, Final Evolution, and Initial Evolution. Although the search results did not clearly indicate which one was the best, based on the readers 'comments and recommendations, it could be seen that " First Evolution " was the most popular and recommended of the three works. The readers 'comments on " First Evolution " mentioned its logical setting, interesting plot, big imagination, and online intelligence. Therefore, according to the opinions of the readers," First Evolution " was the best of the Trilogy of Evolution.
The possible offspring of a male and female Eevee could be any of its evolved forms depending on various factors in the Pokémon world. For example, if it's exposed to a water stone, it could evolve into Vaporeon. Eevee has a diverse genetic makeup that allows for multiple evolutionary paths.
In fanfictions, they often portray their emotions through body language. For example, the male Eevee might wag its tail more when it's around the female Eevee it likes. The female Eevee could nuzzle up to the male to show affection.
There are fanfictions where male and female Eevee love is depicted in a more comical way. For instance, the female Eevee is always chasing the male Eevee around because she has a crush on him, but the male Eevee is a bit clueless at first. As the story progresses, he finally realizes her feelings. And then there are those that delve into their different evolutions and how that might affect their relationship, like if one evolves into a Vaporeon and the other into a Jolteon, and how they still manage to love each other despite their differences.
The male Eevee might start off as a loner. But when he meets the female Eevee, he begins to change. He could develop a sense of loyalty towards her. The female Eevee, on the other hand, could be very social and introduce the male Eevee to new friends in the Pokémon community. This new social circle could put pressure on their relationship in some ways, but also help them grow. For example, they might have to deal with jealousy from other Pokémon who like either the male or female Eevee. Through these experiences, their characters can be further developed.
To write a compelling Eevee starter character, first give it a distinct personality. For example, it could be a curious Eevee that is always getting into trouble because it wants to explore. Second, give it a unique backstory. Maybe it was abandoned by its previous trainer and is now a bit shy but determined to prove itself. Third, show its growth throughout the story. As it faces challenges, it becomes more confident and learns new skills.