One possible storyline could be the child's struggle with living up to the legacies of their parents. Sasuke and Sakura are both very powerful ninja, and the child might feel pressured to be just as great. Another could be the child making their own unique mark in the ninja world, perhaps by developing a new jutsu or forging new alliances.
A great storyline could revolve around the child's discovery of a long - forgotten ninja art that has the potential to change the balance of power in the ninja world. This discovery could put the child in danger as various factions might try to either control or eliminate them. At the same time, the child could be exploring their family history, learning about the love story between Sasuke and Sakura, and how their relationship shaped the world they live in. Also, the child might have to deal with the expectations of their extended family, such as Naruto and Hinata, who could have different ideas about the child's future.
A storyline might revolve around Sakura's medical concerns during the pregnancy. Since she is a medic - ninja herself, she could be extra cautious and research extensively to ensure a healthy pregnancy. At the same time, Sasuke could be struggling with his past demons and fearing that his past actions might somehow affect their unborn child. This could create some internal and external conflicts in the story.
Another great storyline is when they are put in a situation where they have to pretend to be a couple for a mission. At first, it's awkward, but as the mission progresses, they start to realize their true feelings for each other. This type of storyline is full of humor and also some really sweet, tender moments between them.
A fanfic might explore Sakura marrying a civilian. She could be attracted to the simplicity and peace that a civilian life offers compared to the chaos of being a shinobi. Sasuke, on the other hand, could marry a rogue shinobi who he tries to reform. This would create a lot of drama as he tries to balance his own values with his new partner's past actions.
Sasuke could initially be a vampire who is full of anger and resentment, maybe because of how he was turned. But Sakura's positive attitude and kindness could start to soften him. He might start to open up about his past and his feelings. Sakura could develop from a somewhat naive vampire into a more worldly and wise one. She would learn about the darker side of the vampire world through Sasuke, and this would change her. Maybe she would become more cynical at first, but then find a balance between her old self and the new knowledge she has gained.
For Sakura, she could grow in terms of her leadership skills. If they encounter any difficulties in the forest like being chased by a group of wild animals or getting caught in a dangerous situation, she could step up and lead the way out. Sasuke might then realize that Sakura has the potential to be a great leader. And for Sasuke himself, he could become more open to the idea of a relationship with Sakura. The seclusion of the forest could provide the perfect backdrop for him to explore his feelings for her.
A storyline could involve a time - travel element. Naruto, Sasuke, and Sakura are sent back in time and find themselves in a situation where they have to get married to change the future. They start off as reluctant partners but as they spend more time together in the past, they develop real feelings for each other. They also have to hide their relationship from their past selves and other characters while trying to figure out how to change the future.
Another storyline might be that Lemon is a person. Let's say Lemon is a new character who has some sort of connection to the Uchiha clan. She could be a long - lost relative or someone with a prophecy related to Itachi and Sasuke. And Sakura gets involved as she is part of Team 7. The story would then be about uncovering Lemon's true identity and purpose.
The child might have Sasuke's dark hair, which is a very prominent feature in his family. And perhaps Sakura's green eyes, which would be a beautiful combination. They could also inherit Sasuke's angular facial features along with Sakura's rosy cheeks.
One possible plotline could be that after Sasuke has finally returned to the village and reconciled with Sakura, they start to rebuild their relationship. They go on dates, share their feelings and experiences during their time apart, and gradually their love deepens until they reach a point of expressing their physical love for each other.
In this fanfiction, it could be that Sasuke returns to the village and he and Sakura start to build a life together. Their friends are happy for them, and then Sakura becomes pregnant. The story might explore how the news affects their friends and family, and also how Sasuke and Sakura grow as a couple during this time.