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.
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.
Shino might be a bit surprised at first but then be very supportive. He'd probably offer his knowledge of bugs to help in any way he could, like using certain bugs to detect any potential problems during the pregnancy. Naruto would be over - the - moon excited. He'd constantly be checking in on them, bringing over food and just being his usual exuberant self. Sakura would be the practical one, offering medical advice and making sure Hinata is taking proper care of herself during the pregnancy.
Their friends would likely be very excited. For example, Yun would probably be all about making sure Yona has the proper nutrition during her pregnancy. He'd be researching all kinds of herbs and foods that are good for her. Jae - ha might be a bit more teasing towards Hak, but also very protective of Yona. And Zeno would probably just be happy and offer his simple but warm support.
Naruto's friends like Sakura and Kakashi might be initially shocked. Sakura, as a medical ninja, would offer her medical expertise to help Cana during the pregnancy. Kakashi would probably be more reserved but offer his wisdom and protection. On Cana's side, her friends from her own world might be skeptical of Naruto at first, but as they see how much he cares for Cana, they start to accept him.
Harry and Ron would likely be very shocked and concerned. They know Fenrir is a dangerous werewolf, and they might not understand how Hermione got into this situation. They would probably try to persuade Hermione to leave Fenrir at first.
Their friends might be really shocked at first. Some of them could be overjoyed, like those who are always rooting for Matt and Rebekah as a couple. However, there might be a few who are skeptical. For example, those who know about Rebekah's past might worry that she's not ready for motherhood. But overall, most of their friends would probably come around and offer support, whether it's helping with baby preparations or just being there to listen to their concerns.