Shego's origin story has several aspects to it. In the world where she exists, she emerged as a character with her own set of skills and powers. Her powers of green energy projection set her apart. She came into contact with Dr. Drakken, and they formed a partnership of sorts. Their relationship was complex. Drakken relied on her for her combat abilities and her ability to think on her feet. Shego, on the other hand, seemed to tolerate Drakken's often - bumbling ways because she had her own motives, which might have included a desire for power or just a love for the chaos they caused together. She has become an iconic figure in the animated world, known for her distinctive look and her no - nonsense attitude.
Shego's origin is linked to her association with Dr. Drakken. Her powers are a big part of her identity. She likely developed them before teaming up with Drakken. Once they joined forces, she became his main henchwoman, using her powers to help him in his evil schemes.
Shego was once a member of Team Go. She had powers related to green energy. However, she turned to the dark side. She became Dr. Drakken's sidekick. Her powers and her sassy attitude make her a memorable villain in the Kim Possible series.
Another possibility is that Shego is being controlled or influenced by some external force. This external entity might have a vendetta against Kim and is using Shego as a tool to carry out the killing. Shego, being in a subservient position to this force, has no choice but to try and kill Kim.
I'm not very familiar with this particular adult fiction titled 'Shego Marries Kim'. It might be a relatively unknown piece in the vast world of adult fiction. Maybe it has a small but dedicated following within certain circles.
One consequence could be a power vacuum. If Kim was in a position of power or influence, her death would leave a void that other characters would scramble to fill. This could lead to chaos as different characters fight for her position.
One possible scenario in a Shego and Kim fanfic could be that they are forced to team up against a common enemy. Maybe a new villain emerges who has a power that can only be countered by the combined skills of Shego and Kim. They start off hesitant to work together, but as they face challenges, they begin to respect each other's abilities more.
Another aspect in a fanfiction could be their cultural differences. Naruto comes from a world of ninjas with strict honor codes, while Shego is from a more modern - ish world with different moral values. This could lead to many comical or thought - provoking situations. For instance, Naruto might be shocked by Shego's casual attitude towards stealing or using underhanded means in combat. However, as they spend more time together, they begin to see the value in each other's perspectives. They might even influence each other's ways of thinking and acting, with Naruto making Shego more empathetic and Shego teaching Naruto to be a bit more flexible in his approach to problems.
Their relationship would become much more complex. They would have to put aside their differences and work together for the sake of the baby. Instead of being just enemies, they would become reluctant partners in parenting.