There might be. Fanfiction often takes existing characters and relationships and twists them in unexpected ways. Naruto and Kyuubi are two very well - known elements from the Naruto series. Some fanfiction writers like to come up with really wild ideas to explore different aspects of the characters. This 'pregnancy' idea is definitely on the far end of the spectrum of creativity, but it's possible that a writer has delved into this concept in a fanfic.
Yes, in the vast world of fanfiction, there are some really out - there concepts. There could very well be such a fanfiction exploring this highly unusual and creative scenario. However, it would likely be a very niche and perhaps controversial piece due to the nature of the concept. It might involve a lot of creative license in terms of how the pregnancy could even be possible in the Naruto universe's lore and mechanics.
I'm not sure specifically if there is one. Fanfiction is so diverse that it's hard to keep track of every single concept. But given the creativity of fans, it wouldn't be too surprising if someone had written a story like that. Naruto and Kyuubi have a very unique relationship in the original series, and this would be a very extreme way of exploring that relationship in a fan - created story.
Look to Chapter 120 for the clearest answer. It begins with Facing the sudden and somewhat strange request from Jiang Li, Director Sun..., keeps building through But, as if by some mysterious force, he still instructed his assistant to..., and lands on Drink this." Wen Jiaojiao looked at the half.
A practical answer is Chapter 100, because it turns the idea into a concrete scene. The chapter opens with The barrage was about to die of laughter., adds pressure through Who would dare write a script like this!], and ends on Her eyes flickered slightly as she grabbed the hand..
Chapter 96 is the strongest chapter-level answer because it starts from Jiang Li's words seemed absurd, yet there also seemed to be a trace of... and follows through on Xu Ling couldn't contain her soft sobbing, "How could this happen?.
If you want the clearest chapter reference, go to Chapter 87. Early on, Luckily, at that time, Jiang Li had already taken her pot of stinky...; later, the chapter leans on But all this still didn't escape the high-definition camera..
A practical answer is Chapter 97, because it turns the idea into a concrete scene. The chapter opens with Suddenly, Jiang Li's livestream room was packed with people, and the..., adds pressure through Master, you're the only one who can help me now., and ends on And you believe what she says?.
Chapter 85 is the strongest chapter-level answer because it starts from Facing everyone's skepticism and curiosity, Jiang Li explained fluently:... and follows through on This fresh and vibrant flavor blended perfectly..
A practical answer is Chapter 116, because it turns the idea into a concrete scene. The chapter opens with But before the audience in the live room had time to continue brewing the..., adds pressure through So, he quickly nodded as if pounding garlic, "That would trouble Sister Li..., and ends on.
Chapter 125 is the strongest chapter-level answer because it starts from Next, it was Qi Tianyu's turn. and follows through on He deliberately chose the most inconspicuous wheat seeds..
The best chapter pointer here is Chapter 63, "Far Exceeded Expectations!". It opens with During those seven days, he thought he had completely escaped from that... and closes on It was already past midnight, but the conference room at Xingmei....
If you want the clearest chapter reference, go to Chapter 134. Early on, After a brief noon rest, the production team was up to their antics again.; later, the chapter leans on Just as several guests had finished their relaxing hot showers and were....