Yes, there might be some out there in the vast world of fanfiction. However, it's important to note that such content often goes against the original intended nature of the Pokemon franchise which is more about friendship, adventure, and battles. Also, not all platforms may allow this type of fan - created content due to its deviation from the source material's spirit.
One problem is that it goes against the canon of the Pokemon series. Pokemon is about a trainer's journey, friendship, and battles, not this kind of relationship. Another issue is that it can be considered inappropriate, especially considering Pokemon has a large young fan base. It also might not be welcomed in the general Pokemon fan community as it strays far from the original concept.
Well, its popularity can vary. In some niche groups of fans who are into non - traditional pairings and YAOI genre, it might be quite popular. They might create and consume a fair amount of this type of fanfiction. But in the larger Pokemon fanbase that includes all kinds of fans from kids to adults with different tastes, it's not as widespread. There are also some who might not be comfortable with this kind of pairing due to the nature of the relationship and the fact that Pokemon are usually seen as more innocent characters in the original series.
One great Ash x Female Legendary Pokemon fanfiction is 'The Legendary Bond'. It beautifully weaves a story of Ash's encounter with a female Suicune. The story focuses on how they gradually form a deep connection through their adventures together, facing various challenges in the Pokemon world.
One great Ash x Legendary Pokemon fanfiction is 'A Bond Beyond Time'. In this story, Ash forms an unexpected connection with a Legendary like Mew. It's really interesting as it shows how Ash's kindness and determination attract the attention of such a powerful being. The author does a great job of building their relationship and taking the story in new directions.
The appeal lies in seeing Ash in new and exciting situations. With legendaries involved, his journey becomes more epic. It's like taking the underdog story of Ash in the anime and supercharging it.
In Ash-centered legendary Pokemon fanfiction, often Ash has extraordinary adventures. He might form unique bonds with legendary Pokemon that are not seen in the official storylines. For example, he could befriend a Mewtwo and together they face off against an evil organization trying to clone more powerful Pokemon. These fanfictions allow for a lot of creativity, expanding on Ash's character and his relationships in the Pokemon world.
I'm not sure as I don't typically read such fanfictions. But I would assume some common themes could be the exploration of a unique relationship between Ash and the legendary pokemon, perhaps some kind of power dynamic due to the legendary pokemon's abilities.
I'm not really into that kind of fanfiction. But you can try searching on some fanfiction websites like FanFiction.net or Archive of Our Own. Just be aware that not all 'ash x legendary pokemon' fanfictions are well - written, and also make sure to follow the site's rules.
One reason is that it gives more depth to Ash's character. When he's paired with a Legendary, we get to see how he adapts, grows, and learns from such a powerful partner. For example, in some fanfics where he's with Arceus, he has to deal with the responsibility of being associated with the 'God' of the Pokemon world. It also adds an element of the extraordinary to the Pokemon universe we already know and love.