Perhaps in the fanfiction, TK and Kairi are living in a world full of magic or some special circumstances. The pregnancy might bring out some unique powers or abilities related to the baby. They could also go on a journey to find a special healer or place that can ensure a safe pregnancy and birth in this unique world.
TK could develop by becoming more responsible. He might start taking on more tasks like getting a job if he didn't have one before, or learning how to cook healthy meals for Kairi. Kairi, on the other hand, could develop a stronger sense of self - preservation for the sake of the baby. She might become more assertive in asking for what she needs during the pregnancy.
One possible storyline could be about how they deal with the shock and fear at first. They might struggle to tell their families and friends, especially considering their different backgrounds. Draco from a Death Eater - associated family and Ginny from the Weasley family. Another could be them facing the challenges of school while being pregnant, like trying to hide it from their classmates and teachers.
In some fanfics, Sakura could be hiding her pregnancy because she was a victim of a one - night stand or some sort of non - consensual encounter. She's ashamed and doesn't want anyone to know the truth behind her pregnancy. She might be struggling with her own emotions and trying to come to terms with what has happened while also keeping it a secret from those around her.
One storyline could be that Kairi and Tai join forces to rescue a group of trapped Digimon. They have to use their combined skills and the unique abilities of their Digimon partners to navigate through a dangerous area filled with traps and powerful enemies. This would highlight their courage and determination.
Some fanfictions might have a storyline where Sora and Kairi finally get a chance to have a normal life for a while. They could be in a small, peaceful world where they go on dates, learn about each other's dreams, and just enjoy the simple things. But of course, trouble always finds a way to disrupt their peace.
One possible storyline could be Fiona struggling to balance her pregnancy with her chaotic family life. Maybe she tries to keep it a secret at first to avoid more drama, but then has to face the reality as her body starts to show. Another could be about her relationship with the baby's father, whether he is supportive or not.
One possible reason could be that Young Xehanort is very powerful. His strength might be overwhelming for Kairi, both physically and in terms of his dark magic if he uses it against her. Another reason could be that Kairi is in an unfamiliar situation. Maybe she's in a strange place or time where she has no allies to help her, which makes it difficult for her to fight back against Young Xehanort's grip.
One possible storyline could be Sakura facing new challenges during her second pregnancy. Maybe she has to deal with different health issues compared to her first pregnancy. For example, she could be more worried about the baby's health due to her age or some pre - existing conditions. Another aspect could be how her family and friends support her during this time. Her husband might be more involved or perhaps she has an over - protective mother - in - law that adds some comical or tense moments to the story.
A common theme might be the exploration of forbidden love. If in their fictional world there are some sort of rules or circumstances that make their relationship difficult, the kiss could be a symbol of defying those odds. Also, themes of acceptance could be present. They may have to deal with how others in their world view their relationship after the kiss, and the story could focus on them finding acceptance within their community or among their friends.
A possible plot twist could be that Naruto turns out to be a keyblade wielder in disguise. This would completely change the dynamic as everyone in the Naruto world and Kairi would be shocked. It could also mean that Naruto has a whole different origin and mission related to the world of Kingdom Hearts.