The plot might revolve around the second child's training. Sasuke could be very strict in training the child, wanting them to be a strong shinobi like himself. Sakura, on the other hand, might worry about the child getting hurt. This difference in parenting styles could lead to conflicts within the family. Additionally, the second child could have a special bond with an older ninja in the village who becomes a mentor, adding another layer to the story.
One possible plot is that the second child has a different personality from their first. The child could be more outgoing and curious, constantly getting into minor troubles in the village. Sasuke, being the more reserved parent, might struggle to understand the child while Sakura tries to bridge the gap between them. It could also focus on how the family adjusts to having a new addition and how the second child's birth affects the family's standing in the village.
One possible plot could be that Sasuke is constantly away on missions, leaving Sakura to take care of their second child mostly on her own. This could lead to some internal struggles for Sakura as she tries to balance her medical ninja duties with motherhood. And the second child might start to feel neglected by Sasuke's absence and cause some family drama.
One possible plot could be that Sasuke gets seriously injured during a mission and is brought to the hospital where Sakura is a doctor. Sakura then uses her medical skills to save him. While he is recovering, they have deep conversations, reminiscing about their past and their feelings for each other start to re - emerge.
Maybe in this fanfiction, Sakura is turned into Sasuke's pet as a result of a curse. Sasuke, initially confused and a bit frustrated, gradually starts to develop a new kind of bond with her. The plot could involve them going on adventures together, with Sakura in her pet form being able to do things like sense danger or find hidden paths that help Sasuke in his quests.
Sakura would likely develop more patience and strength as she manages a growing family. She's already a strong character, but with a second child, she'll have to learn new ways to handle the chaos. Sasuke, on the other hand, might become more in touch with his emotions as he sees his family expand. He could start to understand the importance of being present more often.
A possible plot is that the child is born with a unique power that neither Sasuke nor Sakura have. This power could attract the wrong kind of attention, and the child has to learn to control it while also hiding it from those who would misuse it. The story could also involve the child making friends with kids from different ninja clans and trying to bridge the gaps between the clans, just like their parents did in a way. Also, the child might have to deal with the pressure of being the heir to two very powerful ninja legacies.
One idea could be that their child discovers a new, unique chakra ability. Since both Sasuke and Sakura are powerful ninjas, their genetic combination might lead to something extraordinary in their child. For example, the ability to combine Sakura's medical ninjutsu with Sasuke's Sharingan - like being able to see the internal damage of an enemy through the Sharingan and heal it instantly with a new form of medical jutsu.
One idea could be exploring how Sasuke adjusts to the news. He might initially be shocked but then become extremely protective. Another could be Sakura dealing with her pregnancy while also handling her ninja duties in a more cautious way. For example, she might have to take on less dangerous missions.
In a fanfiction like this, they could be on a diplomatic mission to another village. After the official business is done, they are invited to a banquet where they get drunk. While drunk, Sasuke might get into a friendly argument with Sakura about different fighting techniques. Sakura, being tipsy, could be more assertive in her views. This could lead to them sparring drunk (in a harmless way) and then realizing how much they enjoy each other's company even when not in a serious ninja - related situation.
One possible plot could be that Sasuke and Sakura are on a mission near a hot spring. By chance, they end up staying at an inn with a hot spring. Sakura wants to relax in it after a tough day of work, and Sasuke, though initially reluctant, joins her. They start talking about their past, their feelings for each other that have been long - buried, and this could lead to a deeper understanding and a strengthening of their relationship in the story.
One possible plot could be that Sasuke and Sakura, both being football fans, accidentally meet at a local football match. They start arguing about which team is better. But as the game progresses, they find themselves getting along and sharing their love for the sport. Eventually, they decide to form a small football club together with their friends in the village.