Susie Derkins could be in it. Maybe she and Calvin have a different kind of relationship now that they are adults. They could be colleagues or even friends who work together on some community projects.
Obviously, Calvin himself as the main character. His parents could also play important roles, showing how their relationship with Calvin has evolved as he grew up.
It could be about Calvin becoming an artist. He might use his wild imagination from his childhood adventures with Hobbes to create unique and thought - provoking artworks. Maybe he has an exhibition where all his works are inspired by the days of building forts and having snowball fights with Hobbes.
One idea could be Calvin becoming a successful artist, using his wild imagination from childhood in his works. Maybe he creates a series of paintings inspired by his old adventures with Hobbes.
Maybe a young apprentice of Hinata. A girl who is inspired by Hinata's grace and strength. This character could bring a fresh dynamic as she looks up to Hinata and also gets to know Naruto. Additionally, there could be a mysterious figure from a far - off land who comes to the Hidden Leaf and has an unexpected connection to Naruto and Hinata's story.
In a grown - up fanfic, Calvin's character development could involve him learning to handle relationships better. He was a bit of a loner as a kid, with Hobbes as his main confidant. As an adult, he might struggle with romantic relationships or making new friends. Hobbes could help him navigate these new waters, and through this process, Calvin could become more empathetic and understanding. Hobbes himself might develop a more complex personality, perhaps showing a side of him that is more vulnerable, which was not as evident when they were kids.
Charlotte's family members could also be main characters. Her parents, for instance, who have influenced her upbringing and continue to be part of her life as she grows. They might be shown guiding her through different life decisions or having their own story arcs that intersect with Charlotte's.
Obviously, Ranma and Akane are prime candidates. Their relationship is central to the series, so a pregnancy between them would create a lot of drama and interesting storylines. Shampoo could also be involved in some way. Maybe she's jealous and tries to interfere, or she could be surprisingly helpful. Genma, Ranma's father, would also play a role. He might have some old - fashioned or comical ideas about the situation.
Obviously Skye herself is the main character. There could be a love interest who is the father of the baby. Her best friend could also be an important character, providing emotional support and practical help like going to doctor's appointments with her.
I don't know as I haven't read this novel. It could be a group of friends who have grown up together and are now facing different life paths.
Definitely Naruto and his friends like Shikamaru. Shikamaru, being the smart strategist, often plays a role in helping Naruto make important decisions as an adult in fanfiction. Also, characters like Kakashi might still be around in some fanfictions, acting as a mentor or an advisor to Naruto in his adult leadership role. And of course, the new generation of shinobi such as Boruto may also be included, showing the relationship between Naruto as a father and his son.
It could be a group of adult friends who get together every Christmas to reminisce about their childhoods and how Christmas has changed for them over the years.