Overcoming challenges is often seen. There could be health issues during the pregnancy that Sakura has to deal with. Or there could be threats from outside the village that target their unborn child. Sai and Sakura have to work together, using their respective skills, to overcome these difficulties. It's about their growth as individuals and as a couple in the face of these challenges.
One common theme is the discovery of love. Since Sai has a rather unique personality, it's often about Sakura getting to know him better and realizing her feelings for him.
Love is also a prevalent theme. High school is a time when people start to have romantic feelings. In these fanfictions, Sakura and Sai might start as friends but gradually realize they have deeper feelings for each other. They could go through the typical high school romance tropes like first dates, jealous classmates, and confessions of love.
One common theme is friendship. Despite their different personalities and pasts, the stories often focus on how they can become friends. For example, Sai has his own past traumas and unique way of interacting, and the fanfics may show how Sakura and Sasuke gradually accept him into their circle.
Love and sacrifice are common themes. Itachi's past and his new role as a potential father make for a complex situation. Sakura's love for Itachi and their unborn child often leads her to make sacrifices. Also, the theme of family acceptance can be seen as they might face challenges from their respective clans.
One common theme is the growth of their relationship. The pregnancy often acts as a catalyst for them to become closer and understand each other on a deeper level.
One common theme could be the challenges they face as a couple with an unexpected pregnancy. It might involve how they deal with family reactions and the future of their relationship.
One common theme is the anticipation and nervousness. Sasuke might be shown as being initially unsure about fatherhood, while Sakura is excited yet also worried. Another theme could be the protection of the unborn child. Given Sasuke's past and the dangerous world they live in, protecting the baby becomes a top priority.
One common theme is the exploration of Sakura's character development. Pregnancy often becomes a catalyst for her to grow even more as a person and a ninja. For example, she might learn to balance her duties as a soon - to - be mother and her responsibilities in the village.
Ino would be very involved. Since she's Sakura's friend, she would be constantly checking on Sakura, giving her advice on pregnancy - related things like what to eat and what not to do. And she would also be helping with preparing things for the baby, like baby clothes and a nursery.
One frequent theme is the exploration of identity. Since being a female Sai might be different from the typical male Sai in these fanfictions, they often struggle to find out who they really are. This could involve finding their place in the Sai hierarchy or in the greater universe. Also, adventure is a big theme. They embark on exciting journeys, like exploring new planets or looking for ancient Sai artifacts.