Sakura might initially be shocked and resistant. She is a strong - willed character, so she could try to fight back or find a way to escape this forced situation. Maybe she would first confront Sasuke about his unacceptable behavior.
One possible reason could be that Sasuke is trying to protect Sakura in his own twisted way. He might think that by making her his wife, he can keep her safe from the dangerous world they live in. Another reason could be related to his family. He might see marriage to Sakura as a way to rebuild his family name or something similar. However, his method of forcing her is completely wrong.
Yes, there are likely fanfictions out there with such a plot. The Naruto fandom is vast and diverse, and fans often come up with creative and unexpected storylines. Some fanfictions might explore complex relationships and scenarios where Sasuke has feelings for both Naruto and Sakura in a way that leads to the idea of marriage. However, the quality and nature of these fanfictions can vary greatly.
Love and redemption are common themes. Sasuke often has a lot to make up for in his relationship with Sakura, and the fanfictions explore how he tries to earn her forgiveness and love. For example, in some stories, he goes on dangerous missions to prove his worth to her.
One reason could be for power. Combining their strengths through marriage could make them an even more formidable force. Maybe Sasuke saw it as a strategic move to protect their village or to face some greater threat that they are not aware of yet.
Sakura could cope by training harder. She would pour all her frustration and confusion into becoming a stronger ninja. This way, she not only distracts herself but also becomes more self - reliant. She might also start to study old ninja scrolls to gain more knowledge, which gives her a sense of purpose other than the forced marriage situation. Another way she could cope is by trying to understand Sasuke better. By getting to know him on a deeper level, she may find a way to either accept the situation or find a solution to get out of it.
Another great one is 'Sakura's Choice'. Here, Sakura has to make a difficult decision that involves Sasuke. It shows her growth as a character and how Sasuke supports her throughout the process.
He could also be initially confused. Sasuke has known Sakura for a long time, and this unexpected act from her would leave him wondering about her motives. He may hold back his anger for a while to hear her out and understand why she did such a thing.
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.
The plot could be that Sasuke has been on a long soul - searching journey and has come to the conclusion that his connection with Naruto and Sakura is something he wants to formalize through marriage. He could start by bringing them together and sharing his feelings. Naruto, being the open - hearted person he is, might be more receptive at first, while Sakura could be more hesitant as she has her own insecurities. As they start to explore this new relationship dynamic, they might face opposition from some of the more traditional elements in the ninja world. But through their combined strength and the power of their friendship, they could work towards making this relationship work while also changing the views of those around them.