Sasuke could also be motivated by power. He might believe that Sakura has some sort of knowledge or power that he needs. By kidnapping her, he can force her to give it to him or help him obtain it. This could be related to her medical skills or some hidden power within her that Sasuke has discovered.
Typically, in such fanfics, Sasuke might be portrayed as overly cruel or unlikable. His actions and motives could be misrepresented to make him seem like the 'bad guy' in the relationship with Naruto. But this is a very one - sided and unfair view compared to how he is in the original series.
In these fanfictions, Sasuke often becomes more responsible. He was once a brooding and solitary ninja, but as a baby daddy, he has to think about someone other than himself. For example, he might start to plan for the baby's future, which is a big change from his usually self - centered ways.
In many such fanfics, Naruto's character often becomes more vulnerable yet also stronger in a different sense. His pregnancy makes him rely on Sasuke more, but at the same time, he is determined to still be a great ninja. Sasuke, on the other hand, becomes more nurturing. He steps up to protect Naruto and the unborn child, showing a side of him that was not as evident before.
Many fanfictions show Sasuke's sadness through his flashbacks. He constantly relives the day his clan was massacred, and these memories haunt him. Writers often use these flashbacks to highlight his internal pain, which affects his relationship with Sakura as he sometimes pushes her away because of it.
As of now, Naruto and Sasuke haven't died in the Boruto manga. Their characters continue to play significant roles and contribute to the story's development.
At the beginning, Sasuke is likely to be his typical distant self. He might view the forced marriage as another obstacle in his life. But as time goes on, Sakura's kindness and determination could chip away at his defenses. Sakura, for her part, will develop more confidence. She has to deal with Sasuke's moodiness and the fact that they are forced together. This forces her to stand up for herself more and also to understand Sasuke on a deeper level. Eventually, they both might become more well - rounded characters, learning to compromise and support each other.