Yes, there might be. There are many fanfic communities out there where such stories could exist. You could try searching on popular fanfic websites like Archive of Our Own or FanFiction.net.
I don't have the definite answer to who Jiro ends up with. The manga could have many twists and turns before revealing the final pairing. It's all part of the excitement of following the story!
In the manga, Jiro and Akari do end up together. The plot builds up their connection gradually, with various challenges and moments that strengthen their bond.
Well, there's 'Naruto and the Mysterious Kyoka Suigetsu'. In this fanfic, Naruto is on a mission and stumbles upon a hidden temple where the secrets of Kyoka Suigetsu are stored. He has to face many challenges and enemies who also want to get their hands on this powerful weapon/ability. Also, 'The Merge of Naruto and Kyoka Suigetsu' is quite fascinating. It imagines a scenario where Naruto somehow fuses with the power of Kyoka Suigetsu, resulting in a new and unique set of abilities that he has to learn to control while still staying true to his values.
Well, Jiro Horikoshi's wife was an important part of his life. Naoko Satomi supported him to some extent. Their story reflects the personal side of Jiro's life, which was intertwined with his great engineering feats. He was so dedicated to his work, and his wife was there in his life during those times, facing the challenges that came with the era, like the pre - war and war - time situations in Japan.
One possible fanfiction could be about Mimiko and Jiro going on a secret adventure together. Maybe they discover a hidden part of their world that no one else knows about. They could face challenges there and their relationship could grow stronger as they rely on each other to get through it.
One good 'Naruto Namikaze Kyoka Suigetsu' fanfiction could be one that explores the unique combination of Naruto's world with the powers of Kyoka Suigetsu. It might involve Naruto having new abilities or facing different challenges. For example, a story where Naruto discovers the power of Kyoka Suigetsu and has to learn to control it while still maintaining his own ninja way. This could lead to interesting character development as he struggles with the illusions and deceptions that come with the power.