One interesting plot point could be the way Naruto and Tayuya deal with the unexpected pregnancy in a world full of ninja duties. For example, they might have to balance protecting their unborn child from potential threats while still fulfilling their obligations to their village.
Well, it could be a story where they are in a committed relationship and the 'pregnancy' is more of a metaphorical or accidental magical occurrence that they have to deal with in a very innocent way. For example, they might accidentally ingest some sort of magic potion that gives the false appearance of pregnancy, and then they have to go through a series of comical misunderstandings and adventures to figure out what's going on.
A plot could involve a mission where Naruto and Tayuya are forced to work together for a common goal. During this time, they get to know each other better and form a bond. The pregnancy could be an unexpected result of their newfound closeness. Naruto would be determined to protect Tayuya and their unborn child, and he would try to bring her into the fold of Konoha. However, there would be many who oppose this union, leading to a lot of drama and conflict.
A more complex plot might involve Tayuya being captured by an enemy group and Naruto being the only one who can rescue her. Along the way, Naruto discovers some secrets about Tayuya's past that change his perception of her, and she in turn realizes that Naruto is not just a simple - minded ninja as she initially thought. As they escape from the enemy, they form a bond that is both unexpected and deep.
One idea could be that Naruto and Tayuya are forced to team up on a mission in a mysterious forest. They start off bickering but gradually come to understand each other's strengths. For example, Naruto's determination and Tayuya's musical ninjutsu skills could combine in an unexpected way to defeat a powerful enemy lurking in the forest.
One idea could be that Tayuya, who was an enemy before, is now a part of the Uzumaki clan. She and Naruto discover they have a connection through their clan heritage. This could lead to them going on a journey to explore the secrets of the Uzumaki clan together.
One idea could be that Naruto, through some strange ninja magic accident, finds himself in a situation where he has to protect Tayuya and a group of other female ninjas. As they go on adventures together, a harem dynamic starts to form. He could teach them his unique ninja ways, and they in turn, start to develop feelings for him.
In a Naruto and Tayuya crossover, it could start with Tayuya being resurrected in the Naruto world long after her death. She's confused and disoriented. Naruto comes across her and is initially cautious. However, he realizes she's not an immediate threat. As they interact, Tayuya starts to be influenced by Naruto's positive attitude. They then find out that there are remnants of the Sound Four causing trouble. Together, they embark on a journey to stop them. Tayuya uses her musical instrument - based attacks, and Naruto uses his ninjutsu, and in the process, Tayuya might even start to consider a new way of life.
One idea could be that Tayuya, after being defeated, has a change of heart and teams up with Naruto to fight a new common enemy. They could learn from each other's skills and jutsu.
One idea could be that Naruto discovers Tayuya has a group of friends who are also interested in him, creating a harem situation. He has to navigate his feelings for Tayuya while also dealing with the others. Maybe they all go on missions together and Naruto gradually realizes his deeper connection with each of them.
One idea could be that Naruto has to team up with Kin and Tayuya to face a new, powerful enemy. Maybe they initially don't trust each other, but as they battle, they start to understand each other's motives and skills. For example, Naruto's positive attitude could start to rub off on Kin and Tayuya, who are used to a more cut - throat ninja world.