Another plot idea could be that they are in a world where pregnancy at their age or in their situation is extremely difficult. They have to overcome many obstacles, like getting proper medical care or dealing with the social stigma. Along the way, their relationship could either strengthen or be put to the test as they face these difficulties together.
Maybe there's a magical or supernatural element involved. For example, the pregnancy could be a result of some kind of prophecy or a special power that they possess. And as they deal with the pregnancy, they also have to figure out how to control or use this new - found aspect of their lives.
One possible plot could be that Karin and Toshiro are in a secret relationship, and when they find out about the pregnancy, they struggle to keep it a secret from their friends and family. They face the challenges of how society or their respective groups would react.
Perhaps the fanfiction could focus on how Toshiro and Karin prepare for the arrival of the baby. They could be redecorating their home, shopping for baby items, and Toshiro could be learning how to be a great father. There could also be a sub - plot where Karin is worried about how her life will change after the baby is born and Toshiro is there to comfort her.
Well, it could be about Karin and Toshiro finding an abandoned baby and deciding to take care of it together. They might face challenges in raising the baby in their world full of supernatural elements.
A really interesting plot might be a sort of 'lost powers' scenario. Maybe Toshiro loses his connection to Hyourinmaru temporarily and Karin, with her unique spiritual abilities, has to help him regain it. This could involve them going on a journey through the Rukongai and facing various challenges together, with Hyourinmaru guiding them in a more spiritual, non - physical way.
In a fanfiction like this, the plot could revolve around Karin's pregnancy being a result of some sort of experimental jutsu gone wrong. Naruto, being the hero he is, feels responsible for her well - being. They might have to go on a journey to find a way to reverse the effects of the jutsu if it's dangerous for Karin or the unborn child. Along the way, they face various enemies and also form a deeper bond as they deal with this unexpected situation.
One possible plot could be that they accidentally get pregnant and then have to deal with the reactions of their friends and the ninja world. There could be a lot of drama as they try to figure out how to handle the situation while also facing their own personal feelings for each other.
Well, it could be a story about how Sasuke and Karin face the unexpected pregnancy. Maybe they initially struggle with the news, as Sasuke has his own goals and Karin might be worried about how this will change things. But then they gradually come to accept it and start preparing for a new life together, learning about responsibility and love along the way.
Incorporate their friends and family in the story. Have their friends throw a baby shower for them or their family members give them advice on parenting. This will add more warmth to the story. Also, include some cute moments like Toshiro and Karin picking out names for the baby together.
One interesting plot idea could be Karin discovers she has a new spiritual power that Toshiro helps her control. They go on a journey together to figure out the origin of this power, facing various Hollows along the way. This would bring them closer as they rely on each other's skills.
One possible aspect of Karin and Toshiro in fanfiction could be their relationship development. Writers might explore how Karin's feisty personality interacts with Toshiro's more reserved nature. For example, in some fanfictions, Karin could be the one to break through Toshiro's cold exterior and make him show his more emotional side. This could lead to interesting storylines where they form an unexpected bond, perhaps even a friendship that gradually turns into something more. Another idea could be their joint adventures in the Bleach universe. They could team up to face a new threat that neither could handle alone, relying on each other's unique abilities.
One common theme is friendship development. Since they are two different characters, many fanfictions explore how they become friends first. Another theme could be adventure, where they go on some sort of journey together.