One possible reason could be a miscommunication that escalates out of control. Maybe Sasuke is on a path that Naruto believes is too dangerous for the world, and Naruto, in an attempt to stop him, accidentally kills him. For example, Sasuke might be about to use a powerful and uncontrollable jutsu that Naruto fears will destroy the Uchia compound and much more, so he acts in haste.
For characters like Itachi, if his spirit or some form of his consciousness was still around in the fanfiction, it would be a complex situation. He sacrificed so much to protect Sasuke, and now Naruto killing him would be a huge irony. Itachi might try to influence the events from the afterlife or through some other means. And Hinata, who loves Naruto, would be deeply concerned for Naruto's state of mind. She would try to support him, but also struggle with the moral implications of what he has done.
In uchia x sakura fanfiction, themes like discovery are quite popular. They might discover new powers or new aspects of their world together. Also, the theme of loyalty can be explored. They could be in situations where their loyalty to each other is tested, creating interesting storylines that can range from heart - warming to intense and action - packed.
Finding good 'uchia x sakura' fanfiction can be a bit of a treasure hunt. Another option is to check out some dedicated anime or manga fanfiction blogs. Some bloggers curate and recommend fanfictions. It's also important to note that different people have different tastes, so what one person loves, another might not. So be prepared to sift through a few to find the ones that really appeal to you.
Another option is to join some fan communities related to the source material of Uchia and Sakura. For example, if they are from a particular anime or manga, join the relevant forums or subreddits. Ask the members there if they know of any good Uchia x Sakura non - lemons fanfiction. They might be able to point you in the right direction.
There might be some fanfictions exploring the idea of Itachi Uchia and Sakura in a family - like situation without being overly adult - themed. However, such fanfictions may not be very common as their relationship in the original series is not of this nature. You can try searching on fanfiction - specific websites like FanFiction.net or Archive of Our Own, and filter the results to exclude any inappropriate content.
One plot idea could be a story where Uchia and Sakura are on a quest together. They could be searching for a lost artifact that has significance to their world. Along the way, they face various challenges that test their friendship and teamwork, and gradually develop deeper feelings for each other.
Maybe in the fanfiction, there's a magical or special circumstance that brings Itachi and Sakura together. For example, a powerful jutsu gone wrong that binds their fates. And then when Sakura becomes pregnant, they have to figure out how to protect their unborn child from various threats, whether it's from other ninja clans or some mysterious forces.
In this kind of fanfiction, Sasuke could die from a sneak attack. He might be so focused on his main target during the Wave mission that he doesn't notice another hidden threat. And this hidden enemy could strike him when he least expects it, leading to his death. For example, an assassin could be hired to specifically target Sasuke and use some sort of poison or a deadly jutsu that he can't defend against in time.
There could potentially be some really creative and out - of - the - box fanfictions with this concept. But finding one might be a challenge. You could try searching on specialized fanfiction websites and use specific search terms like 'Kakashi Sasuke non - traditional relationship fanfiction' and then look through the results to see if there are any that involve the idea of Sasuke being pregnant. But remember, this is a very unusual concept even for fanfiction.