There are fanfics where Sasuke is a bit more reserved in his reaction. He may not show extreme emotions outwardly but instead, internally he's filled with a mixture of excitement and fear. He might start thinking about all the responsibilities that come with having a child and how his life as a ninja will need to change to accommodate this new addition to his family.
Sasuke may initially freeze in disbelief. His mind would be racing with thoughts. He might recall all the things he has been through and wonder if he can provide a stable and loving environment for the child. After a moment of silence, he would probably hold Sakura's hand tightly and tell her that he will be there for her and the baby, no matter what challenges lie ahead.
He might be initially confused. Sasuke is not used to Sakura ignoring him as she has always been somewhat persistent in her attention towards him. So, he may be at a loss as to why she is suddenly acting this way.
In some fanfictions, Anakin might be overjoyed. He could immediately embrace Padme and start talking about their future together, like planning for the baby's arrival and thinking about names.
Well, Harry could have a range of reactions. He might be a bit scared at first, given his own difficult past. But then the love for Ginny and the thought of their new family could make him determined to be the best father he could be. He might hold Ginny tightly and tell her how much he loves her and that they will face everything together.
Well, his reaction could be a bit more complex. He might first be in shock, just standing there for a moment, taking in the news. Then, he could start to feel a mix of emotions like joy, but also a bit of nervousness about the responsibilities that come with having a child. He might hold America's hands tightly and say something like 'This is amazing, but also a big step for us.'
In some fanfics, Sasuke might initially be shocked. He could then feel a mix of joy and fear. Joy because he's starting a family with Sakura, but fear because of the responsibilities and potential dangers that might come with it.
Peter might be initially shocked. He could then feel a mix of excitement and fear. In some fanfictions, he immediately hugs Mary Jane tightly, assuring her that they will get through this together.
Naruto might initially be in denial. He's so used to having Sakura around and believing that they have a future together. So when she leaves for Sasuke, he might think it's just a temporary thing or that she's been influenced by something or someone. But as time passes and he realizes it's real, he would be deeply hurt. He might also start to question his own self - worth, thinking that he wasn't good enough for Sakura. And he might even try to win her back at first, but then slowly come to accept the situation and focus on his other responsibilities like being a ninja and protecting the village.
She might be initially heartbroken. Sakura, being in love with Sasuke, would surely be deeply affected when he neglects her. She could become withdrawn herself, losing some of her usual cheerfulness.
One common theme is the growth of Sasuke and Sakura's relationship. The pregnancy often serves as a catalyst for them to become closer and more committed to each other. Another theme could be the idea of family, exploring how they will create a new family unit different from what they had growing up.