Another plot could be that the baby gets lost in a strange realm. Kagome and Sesshomaru embark on a journey to find it. Along the way, they discover more about each other and their relationship deepens. They face many challenges in this realm which are designed to test their parenting instincts as well as their own individual strengths.
Maybe the baby is born in a time of great unrest between the demon and human worlds. Kagome and Sesshomaru have to work together, despite their differences, to ensure the baby's safety and also to bring peace. The baby could be a symbol of hope for the two races to co - exist peacefully.
One idea could be that the baby has some unique powers that are a combination of Kagome's spiritual powers and Sesshomaru's demon abilities. This could lead to various adventures as they try to protect the baby from those who might want to use its powers for evil.
Another plot could be that Kagome gets lost in a dangerous part of the spirit world and Sesshomaru, who happens to be there, reluctantly decides to help her find her way back. As they journey through the spirit world, they encounter various challenges that force them to rely on each other. Kagome might use her spiritual powers in new ways, and Sesshomaru could show a more protective side.
One idea could be that Kagome brings chocolate from her time as a gift for Sesshomaru. He is initially suspicious but then becomes intrigued by the unique taste. Another could be a story where chocolate has some sort of magical property in their world, and Sesshomaru and Kagome have to work together to control its power while also dealing with their growing feelings for each other.
One plot idea could be that Koga and Kagome accidentally end up in a situation where they have to take care of a baby together. Maybe they find the baby in the forest and have to figure out how to keep it safe while also dealing with their own feelings for each other. Another idea is that a magic spell causes them to have a baby of their own in a strange, otherworldly way. This would lead to a whole new set of challenges as they navigate being new parents in a world full of demons and magic.
One idea could be that they are forced to dance together at a supernatural ball. Their initial reluctance turns into a sort of understanding as they move in sync. Another could be a dance that is part of a magical ritual to save their world. They have to combine their powers through the dance, which leads to a new level of respect between them.
In a high school fanfiction, they could be part of a secret club. Kagome joins thinking it's an ordinary club, but it turns out to be a club for those with special abilities, and Sesshomaru is one of the leaders. As they train together in the club, they develop feelings for each other. Also, a plot could be that they are paired for a school dance competition and through the practices, their relationship blossoms.
Well, the fanfiction could focus on Kagome's pregnancy journey in a world filled with magic and danger. For instance, she might discover new powers or abilities related to her pregnancy that help her survive in this Sesshomaru - centered world. There could also be a sub - plot about the other characters' reactions, like Inuyasha's response to his friend Kagome being pregnant in this rather strange situation.
Well, perhaps there's a new demon in the land that specifically targets those with spiritual powers like Kagome. Sesshomaru, who has a certain level of disdain for most humans but also a sense of the greater good in the world, steps in to protect her. They could end up on a journey to find the source of this new demon threat. During this journey, Sesshomaru teaches Kagome some of his combat techniques to help her defend herself better, and Kagome, in turn, shows Sesshomaru the value of human emotions and connections.
A possible plot is that they both get caught in a time - travel incident. They end up in a strange era where they are the only ones who can understand each other. They must rely on each other to survive in this new world. They face challenges like finding food, shelter, and dealing with the local inhabitants who are hostile to them. This plot would focus on their survival skills and how they adapt to the situation together without any romantic elements.
One great fanfiction where Kagome finds a baby Sesshomaru could be 'Kagome's Unexpected Discovery'. In this fic, Kagome stumbles upon a baby Sesshomaru in a forest glade. The story then delves into how she decides to take care of him, despite their previous enmity. It's a heartwarming tale of an unlikely bond forming between the two.
I'm not sure of a specific titled fanfiction exactly like this, but there could be many on platforms like Archive of Our Own. You can search for tags like 'Sesshomaru', 'Baby Kagome', 'Found Family' to narrow down the results. It's likely that in such a fanfiction, there would be a lot of cultural clashes as Sesshomaru is from a very different world than Kagome, which could make for some interesting plot points.