Maybe a story where an enemy targets Sarada to get to Naruto and Sakura. Naruto and Sakura then have to put aside all their differences and past issues to protect their daughter. This could involve flashbacks to their own relationship history and how they overcame obstacles in the past. It could also show Sarada realizing the depth of her parents' love for each other and for her.
Another idea is that there is a prophecy about the two of them saving the village from a great threat. They initially don't believe it, but as strange events start to occur, they begin to accept their fate and train hard to be able to face the oncoming danger.
In Naruto x Sarada fanfiction, a possible plot is that there is a new threat to the Leaf Village that only their combined skills can defeat. Sarada's intelligence and Sharingan abilities combined with Naruto's vast chakra reserves and Rasengan techniques could make for an exciting battle. Also, it could be interesting if they have to infiltrate an enemy stronghold where they need to rely on each other completely, and in the process, Sarada learns more about Naruto's past and what made him the Hokage.
Well, a cool concept could be that Naruto discovers Sarada has a unique power that is similar to his own but also very different. He then decides to mentor her privately, and during this process, they form a strong bond that is not just about master - student but also a deep friendship. They could also face some challenges from the village elders who are skeptical about their relationship.
A third idea could be a story where Sarada discovers a hidden power within herself, and Naruto is the only one who can help her control it. This could lead to a deep bond between them as they work together to master this new power, and Sarada learns more about the Hokage Naruto than she ever knew before.
Another plot idea is that Naruto, Sakura, and Ino are transported to a different dimension. In this dimension, they have to find a way back home while also dealing with the new and strange rules. They meet different versions of themselves and their friends. This makes them question their identities and relationships. Along the way, they have to combine their powers and wits to overcome the challenges and find their way back to their own world.
A plot could involve a time - travel aspect. Naruto, Ino, and Sakura are sent back in time to their early days at the academy. They use their future knowledge to change some events, and in the process, their relationships develop in different ways. Naruto could see Ino and Sakura in a new light as they all struggle to keep their time - traveling a secret and deal with the changes they're making to the past. This could lead to a complex web of emotions and relationships between the three.
A more emotional plot could be centered around family. Sarada has some doubts about her family, and Naruto and Sakura, having been through their own family - related struggles, could offer her advice and support. They could share their stories of growing up without parents (in Naruto's case) or with a complex family situation (in Sakura's case), which would help Sarada come to terms with her own family issues.
One idea could be a time - travel plot where Boruto and Sarada are sent back to Naruto and Sakura's genin days. They could witness the early days of Team 7 and get involved in some of their missions, which would change the course of history in unexpected ways.
Family bonds are a common theme. Since Naruto is like an uncle or a mentor figure, Sakura is Sarada's mother, and they all have a connection to the Hidden Leaf Village. Another theme could be growth, as Sarada grows up learning from both Naruto and Sakura.
Growth and self - discovery are also prevalent. Sarada is still growing as a character, and in these fanfictions, her journey of self - discovery is often intertwined with her interactions with Naruto and Sakura. She learns from them, and at the same time, they learn from her as well. This mutual growth is an important aspect in many such fan - created stories.