Often, a theme is adventure. The presence of Legendary Pokemon in Ash's world in these fanfictions usually leads to grand adventures. They might journey to hidden places or face off against powerful foes together. Also, there can be a theme of self - discovery for Ash. Interacting with Legendary Pokemon can make Ash realize new aspects of his own capabilities and his role in the Pokemon world. For instance, if he teams up with Lugia, he might learn more about his ability to communicate with and understand Pokemon on a deeper level.
Finding 'legendary pokemon lemon fanfiction' is a bit tricky. Some independent fanfiction blogs or forums might have it, but these are often unregulated spaces. It's not advisable to actively seek out this type of fanfiction as it may violate the terms of use of many platforms and also goes against the general positive and family - friendly image of the Pokemon series. Instead, you could focus on more mainstream and appropriate Pokemon fanfiction.
Some 'legendary pokemon lemon fanfiction' might focus on the power dynamics between a trainer and a legendary pokemon in a relationship - like scenario. They could delve into how the two entities, with their distinct natures (one being a powerful legendary and the other a human trainer), navigate through their feelings and experiences together. It's a very niche area within the Pokemon fanfiction community.
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.
Honestly, I don't recommend seeking out 'lemon' fanfiction. But if you're just interested in well - written fanfiction about female legendary Pokemon, you can check out Reddit's Pokemon fan communities. People often share links to great fanfictions there, and it's a more moderated and family - friendly environment compared to some other places where you might find inappropriate content.
Most legitimate fanfiction platforms do not allow 'lemon' content due to its adult nature. So, rather than looking for such stories, you might want to explore regular Ash and female legendary Pokémon fanfictions. These can offer interesting storylines where Ash forms unique bonds with the legendary Pokémon, like in stories where they team up to save the Pokémon world from a great threat. There could be elements of mystery, as the powers of the legendary Pokémon are often not fully understood, and Ash has to figure out how to work with them.
Articuno, Zapdos, and Moltres are quite common. Their elemental powers and the mystery surrounding them make for great fanfiction material. Ash might encounter them during his travels and have to either help them or face off against them in some way.
One of the Legendary Pokemon could be Giratina. Despite its somewhat dark and otherworldly nature, Giratina might be intrigued by Ash's light - heartedness and his ability to make friends with all kinds of Pokemon. Dialga and Palkia could also be part of the harem. Dialga, with its control over time, might see Ash as an important factor in the future of the Pokemon world. Palkia, in charge of space, could be interested in how Ash navigates different regions and spaces in his journey. And don't forget about Ho - Oh. Ho - Oh is a symbol of hope and might see Ash as a bringer of hope in the Pokemon world, thus joining his harem.
Arceus is quite popular. Given that it's considered the creator of the Pokemon universe in the official lore, it often has a significant role in fanfictions. Mewtwo is also very common. Its powerful psychic abilities and complex backstory make it a favorite for fanfic writers to explore. Another popular one is Lugia. With its majestic appearance and its connection to the sea, it's often a central figure in many stories.