There could be fan fictions where baby Ash Ketchum has some sort of special ability that is only present when he is a baby. This could lead to all sorts of adventures and interesting storylines. For instance, he might be able to communicate with Pokémon in a unique way that he loses as he grows older. These stories often explore different aspects of his character that we don't see in the original series.
I'm not aware of any specific 'Ash Ketchum impregnation fanfic' stories as such content often goes against the family - friendly nature of the Pokémon franchise. Fanfics usually focus on adventures, friendships and Pokémon battles in the Pokémon world.
One popular story could be 'Ash's Unusual Adventures in the Harem World'. In this, Ash might find himself in a world where he has to deal with multiple female companions in unexpected ways. Another could be 'Ash and the Harem of Pokémon Trainers', where female trainers from different regions are all attracted to Ash's unique charm and skills.
One popular Ash Ketchum and Lillie fanfiction might be those where they go on an adventure together in a region not explored in the main series. They could face new and powerful Pokémon and have to rely on each other's skills to overcome difficulties.
One popular 'Ash Ketchum and Serena fanfic' story could be about their adventures in a new region that wasn't shown in the original series. Maybe they discover a new type of Pokémon together and their relationship deepens as they face challenges in taming it.
To write a 'baby ash ketchum fan fiction', start with a clear idea of what you want the story to be about. It could be about his first steps into the world of Pokémon training. You need to create a believable setting, like the small town he lives in. Also, give baby Ash some distinct personality traits. Is he brave even as a baby? Or is he more shy? Develop the plot around these elements, and don't forget to add some conflict, like a mean Pokémon that tries to stop him from starting his journey.
Popular Ash Ketchum lemon fanfics can vary greatly. Some might focus on Ash's adventures in a more romantic or emotional way that is a bit different from the main series. However, these types of fanfics are often a matter of personal taste. You could also look for reviews or ratings on fanfic platforms to get an idea of which ones might be worth reading. But keep in mind that the Pokémon franchise is mainly aimed at a wide audience, and these fanfics are more of a niche within the fandom.
One popular type of female Ash Ketchum fanfic might be those where she has unique adventures in different regions. For example, she could be on a solo journey in the Alola region, facing challenges that are different from the ones in the anime. Another could be a story where she teams up with female Pokemon trainers from all over the world to compete in a special tournament. There are also fanfics that explore her relationships with her Pokemon in a more in - depth way, like how she bonds with Pikachu in new and unexpected situations.
Another one is 'Ash and the Legend of Zelda'. Picture Ash traveling through Hyrule, using his Pokemon to help him solve the puzzles and fight the monsters in the Zelda world. It offers a whole new perspective on both the Pokemon and Zelda universes, with Ash's character bringing a new dynamic to the Zelda storyline.
One popular story could be about their adventures in a new, uncharted region. They might face unique Pokémon and challenges together, strengthening their friendship and partnership. Another could be a story where they participate in a special Pokémon tournament that has unexpected twists and turns.
One good fanfic could be 'Ash's Homecoming'. It focuses on Ash returning home to Pallet Town and his heartwarming interactions with Delia. It shows their strong bond through simple daily activities like having dinner together and sharing stories of his adventures.