Damon would likely make sarcastic remarks at first but deep down be happy for them. He and Bonnie have a long history, and he'd come around to being supportive. Elena would be very emotional. She'd be there for Bonnie, offering advice based on her own experiences, even if they were different in nature. The other witches in Bonnie's coven might be a bit worried at first, fearing that the pregnancy could disrupt Bonnie's connection to magic or put her in danger from other supernatural forces.
Their friends' reactions would be a mixed bag. Some, like Matt, who is more on the human side of things, would be in awe of this supernatural pregnancy. He'd try to understand it from a human perspective and offer practical help like getting baby supplies from the human world. Meanwhile, the other supernatural friends would have different reactions based on their own agendas. For example, some witches might see Bonnie's pregnancy as a powerful event and either try to use it to their advantage or protect it out of a sense of duty to the witch community. Overall, their friends' reactions would add a lot of drama and support to the fanfiction story.
Well, Stefan would likely be the voice of reason. He'd be cautious about Kai's role in the pregnancy but would also try to encourage Bonnie to make the best decisions for herself and the baby. Jeremy could be angry at first, thinking Kai has taken advantage of Bonnie. But as time goes on, he might see that Kai is actually trying to do the right thing. And the other witches in Bonnie's life might be divided. Some would see the pregnancy as a sign of new magic potential, while others would fear the chaos Kai could bring to the magical balance.
The Salvatores would probably be shocked. Damon might be initially angry, thinking Elijah has taken advantage of Elena. Stefan, on the other hand, would be more concerned about Elena's well - being and the implications of a half - vampire, half - something - else baby. He'd want to make sure she's safe.
You can start by looking on fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. These platforms have a large collection of fanfictions on various topics, including ones about Bonnie and Elijah. Just use the search bar and type in 'Bonnie and Elijah pregnant' and you'll likely find some relevant stories.
Ron might be shocked at first. But then, being the good - hearted person he is, he would probably offer his help. Bonnie, on the other hand, could be a bit more hesitant. She might be worried about how this would affect her marriage to Ron. However, as time goes on, she would also come around and be supportive.
Maybe the pregnancy was unexpected and it forces Bonnie and Elijah to re - evaluate their relationship. They might have been in a somewhat tenuous relationship before, and now they have to come together for the sake of the baby. There could be a journey of them learning to trust each other more deeply, dealing with family reactions (Bonnie's witch friends and Elijah's vampire family), and ultimately finding a way to build a future for their new family.
Naruto would probably be super excited and offer all kinds of help. He might bring over some of Hinata's home - cooked meals for Ino. Sakura would be very practical, offering her medical expertise and making sure Ino is having regular check - ups. Shikamaru would be more laid - back but still offer some sage advice about the responsibilities of parenthood.
Elena might be a bit shocked at first but then would be very supportive. She would offer her own experiences and advice, even if they are from a human perspective. Bonnie could be worried about the magical implications of a vampire pregnancy and offer to use her magic to keep an eye on the baby's development.
Their friends might be initially shocked. Some might be overjoyed and offer immediate support. For example, those who are close to them would probably start planning baby showers and getting gifts. However, there could be some friends who are worried about how this will change their group dynamic.
Sakura would probably be shocked at first, but then she'd be supportive. She might offer her medical skills to help with Tenten's pregnancy. Shikamaru would likely think it's a troublesome situation but would also offer his strategic advice on how to handle things. Kakashi would be his usual calm self and give them some wise words about responsibility and family.