Another possibility is that the father could be a new character introduced specifically for the fanfiction. This new character could be from a different part of the RWBY world, perhaps a powerful but mysterious figure who has a brief encounter with Ruby that leads to her pregnancy.
Well, one possibility could be that the story focuses on Ruby's internal struggle. She might worry about how her pregnancy will affect her role as a huntress. She could also face challenges from the society in the RWBY world that may not be fully accepting of a young huntress being pregnant. Another aspect could be how her team members react and support her through this new phase of her life.
Maybe it's a completely new character introduced in the fanfiction. This new character could have some special powers or a unique connection to Naruto that results in the pregnancy.
It could be Beast Boy. Their relationship in the original series has some chemistry, and in the fanfiction, it would be an interesting twist if he were the father. Maybe their relationship takes a new turn when Raven discovers she's pregnant.
Perhaps it's a new kind of monster that was created through a combination of human technology and some ancient, unknown force. This new monster mated with Godzilla in some unexpected encounter, and now she's pregnant. There could be a whole backstory about how this new monster came to be and how it interacted with Godzilla.
It could be Rick. They have a strong bond and connection in the series, so it's a possibility that he could be the father in the fanfiction.
If we follow the more traditional route, Mako could be the father. They had a relationship in the show, and it would be a natural progression for them to start a family. Their relationship had its ups and downs, and the pregnancy could be a new chapter in their story together.
I'm not entirely sure if there is a 'rwby reader gets ruby pregnant fanfiction' that is all - ages - appropriate. Fanfiction can vary widely in terms of content and quality. Some writers might try to handle such a concept in a more innocent or alternative - universe - type way that could potentially be suitable for a general audience, but it's not common given the nature of the RWBY series. It would be best to search through the more family - friendly fanfiction platforms and see if anything like that exists.
While Peeta is the obvious choice, some fanfictions might explore the idea of Gale being the father. This could add a whole new layer of drama and conflict. Maybe there was a moment of passion between Katniss and Gale before she fully committed to Peeta, and this led to her pregnancy. However, this would be a more controversial take as it goes against the main narrative of Katniss's relationship with Peeta in the original series.
It could also be a new character introduced in the fanfiction. Maybe a powerful demigod from another camp who Annabeth meets during a diplomatic mission. This would create a whole new set of drama and conflict, as Annabeth would have to deal with her feelings for Percy and this new person, as well as the implications of having a child with someone other than Percy.
It could be one of her close friends from the guild. Maybe Jellal, considering their complex relationship in the original story. There's already a lot of history between them, and this could be a new development in their relationship.