Since it involves a rather specific and perhaps unappealing topic to many, it probably has a relatively small following. However, in some very specific fan communities that are into unique or out - of - the - ordinary scenarios, it could have some popularity.
In general, fanfiction that involves diapers in relation to a character like Sakura Haruno might not be considered appropriate in the context of the original Naruto series, which is mainly about ninja adventures, growth, and relationships. It can seem out of place and may not adhere to the spirit of the source material.
I'm not really sure about specific 'sakura haruno diaper fanfic' stories as it's not a very common or mainstream type of fanfic. However, you could try searching on some well - known fanfic websites like Archive of Our Own or FanFiction.net and use those keywords to see if any relevant stories pop up.
First, you need to have a clear idea of the plot. Since it's about Sakura Haruno, you could incorporate her character traits. For example, her determination could play a role in the story even if it involves a rather unusual diaper concept. Start with an outline of the beginning, middle, and end.
I'm not sure specifically about Sakura Haruno diaper fanfiction as it might be a rather niche and not so common type of fanfiction. However, you could try searching on popular fanfiction websites like FanFiction.net or Archive of Our Own. They have a vast collection of Naruto - related fanfictions, and you might find something related to Sakura Haruno in their search results.
In an 'Immortal Sakura Haruno Fanfic', one aspect that could be fascinating is how Sakura deals with the passage of time. She would have to constantly reinvent herself to avoid suspicion. She might also form relationships with characters from different generations. Her immortality could make her a target for those who want to study or use her for their own gain. This would create a lot of conflict and drama in the fanfic.
I'm not sure if there is a specific 'sakura haruno seduce fanfic' readily available. You could try searching on fanfic platforms like FanFiction.net or Archive of Our Own, but keep in mind that the content should be appropriate and in line with the platform's rules.
It depends on how it's written, but generally, it doesn't seem appropriate. Cardcaptor Sakura is a story that is centered around positive values like friendship and courage. A 'diaper fanfic' might involve elements that are not in line with these values or are simply too odd and not suitable for the mainstream audience that the original series targets. If it's just a silly, innocent take on the characters in a different situation, it might be okay for a very small and specific group, but overall it's not a typical or appropriate addition to the Cardcaptor Sakura fan works.
One way is to start positive fanfic writing challenges within the fan community. For example, a challenge could be to write about Sakura Haruno's achievements in her ninja training. This would focus on her positive traits and abilities.