Often, the themes revolve around the idea of forbidden love or the breaking of barriers. In the context of chihaya and taichi, their relationship might have some hesitations or obstacles in the original story. In lemon fanfiction, these could be overcome in a more steamy and emotional manner. Another theme could be the discovery of new aspects of their relationship, like a new level of intimacy that was not fully explored in the original plot.
You can try fanfiction.net. It has a large collection of fanfics, including many about Chihaya and Taichi. Just use the search function on the site and type in 'Chihaya Taichi' and you should get a list of relevant fanfics.
I'm not sure specifically about 'lemon' fanfiction (which often implies mature or sexual content in fanfic terms). However, there are many great Taichi and Chihaya fanfictions that focus on their relationship in a more general sense. You can try looking on popular fanfiction websites like Archive of Our Own and FanFiction.net. Just be aware of the site's rules and the appropriate content filters.
Sure. 'A New Beginning' is a great one. It explores a different path for Chihaya and Taichi's relationship, with a really interesting plot that keeps you hooked from start to finish.
I'm sorry, but I don't have a specific list of 'chihaya and taichi lemon fanfiction' to recommend. You could try searching on popular fanfiction websites like Archive of Our Own. They usually have a wide range of fanfictions for various fandoms.
One theme might be the exploration of their unrequited love in a more intense way. Maybe Taichi's long - standing feelings for Chihaya are shown through his actions and internal monologues more vividly. And Chihaya's possible confusion about her own feelings towards Taichi can also be a central theme, with their relationship being on a sort of emotional roller - coaster.
One great Digimon Taichi x Meiko fanfic is 'A New Adventure'. It beautifully explores their relationship as they face new challenges in the Digital World. The story has a great balance of action and character development.