The main ethical issue is that it goes against the spirit of the Naruto franchise. The Naruto story is about positive values such as loyalty, hard work, and friendship. A fanfiction with such a concept of Naruto getting Sarada pregnant completely distorts these values. It also makes the characters behave in a way that is not in line with their original personalities. For example, Naruto is a character who upholds justice and family values, and this concept would be a complete contradiction to that.
I'm not aware of any such fanfiction, and this concept involves some inappropriate and unethical implications. In the Naruto universe, Naruto is much older and in a different generation from Sarada. It goes against the normal relationships and values established in the original work.
One potential antagonist could be a group of rogue ninjas who see Sarada's pregnancy as a sign of weakness in the village. They might try to target her to cause chaos. Another could be a jealous rival who doesn't like the attention Sarada is getting due to her pregnancy and her connection to Naruto.
Yes, there are likely some 'Naruto Gets Pregnant' fanfictions out there in the vast world of fan - created content. However, such concepts often deviate from the original source material in very extreme ways.
One possible plot could be the challenges Sarada faces as she is pregnant while still being a ninja. She might have to balance her duties and her pregnancy, and Naruto could be there to offer support and wisdom based on his own experiences. Maybe she has to deal with the reactions of the village, some being positive and others being skeptical.
I'm not sure if there is such a specific fanfiction. Fanfiction can cover a wide range of very creative and sometimes out - of - the - ordinary ideas, but this one seems rather unusual. You might try searching on some large fanfiction websites to see if it exists.
I'm not sure if there is a single 'popular' one in the sense that it's widely known. Fanfiction is a vast world with so many different stories. Some people might write this type of fanfiction for the shock value or to explore a different relationship dynamic. But it's likely that most Naruto fans are more focused on the canon pairings or more established fan - created pairings. So it might be a bit of a niche within the Naruto fanfiction community.
There might be such a fanfiction. However, it's important to note that a lot of fanfiction is unregulated, and the quality can vary greatly. If it does exist, it could be on large fanfiction platforms like FanFiction.net or Archive of Our Own. But you would have to use their search functions and look for it specifically.
I'm not sure if there is such a specific fanfiction. Fanfiction topics can be extremely diverse, but this one seems rather unusual and might not be common. It could also potentially violate the spirit of the original Naruto story which focuses more on their friendship and rivalry rather than this kind of relationship.
In fanfiction, almost anything can be possible as it's a realm of creative interpretation. However, this concept goes against the original nature of the Naruto series where Naruto is male. But in fanfiction, some authors might use magic or some unique plot devices to make such a situation happen, but it's not in line with the canon.