One possible plot could be that Sesshomaru kidnaps Kagome because he believes she has some power or knowledge that could be useful to him. Maybe he thinks she can help him find a powerful weapon or a way to gain more territory. He might keep her in his lair and at first be very cold towards her, but as time passes, he starts to see her in a different light.
Kagome would most likely be very angry at first. She's used to being in control of her own life and suddenly being kidnapped by Sesshomaru would be a huge violation. She might try to use her spiritual powers to fight back or at least escape.
One possible plot could be that Kagome discovers she's pregnant after an unexpected encounter with Sesshomaru. They then have to deal with the shock and the implications in a world where their relationship is not the norm. Sesshomaru might struggle with his new - found responsibilities while Kagome tries to adjust to the changes in her body and life.
Perhaps in the fanfiction, Koga kidnaps Kagome believing she has some special power that can help his wolf demon tribe. He might think that she can heal the sick among them or bring good fortune to their land. However, Kagome doesn't actually have this power, and she has to convince Koga to let her go while also trying not to anger him too much. As she's held captive, she might learn more about the wolf demons and their way of life, which could be an interesting aspect of the story.
The plot could involve Kagome accidentally stumbling into Sesshomaru's territory. Maybe she's on a mission to find a powerful shard and his land holds a clue. This encounter could start a series of events where they initially clash due to their different natures - Kagome being warm - hearted and Sesshomaru being cold and aloof. But as the story progresses, they might start to understand each other better and form an unlikely alliance.
One possible plot could be that Pup Sesshomaru, in his own developing way, feels a strong connection to Kagome. He might start by protecting her from various threats in the feudal era. As time goes on, this protection could turn into a possessive claim over her, leading to a complex relationship dynamic where Kagome has to deal with her feelings for him and the situation she's in.
Perhaps the plot could involve the initial shock and confusion for both Kagome and Sesshomaru. They'd have to deal with the social and personal implications of this unexpected situation. Maybe they'd try to keep it a secret at first, but as the pregnancy progresses, it becomes harder to hide.
It could be that Inuyasha kidnaps Kagome as part of a deal. He made a deal with another powerful being to save someone else he cares about. He doesn't want to do it but feels he has no choice. Kagome, being the strong - willed person she is, then tries to find a way to get out of this situation while also helping Inuyasha out of his moral dilemma.
Well, perhaps Inuyasha is under some sort of dark spell. He might be influenced by an evil force that makes him see Kagome as a threat to his freedom or something he needs to control. So, he kidnaps her and takes her to a remote place. Kagome, being the strong - willed character she is, tries to reason with him and break the spell's hold on him.
In this fanfiction, it could be that the pups are in some sort of danger, like being hunted by a powerful demon. Kagome, with her spiritual powers and knowledge from her own world, steps in to save them. As she spends time with the pups, she starts to understand more about Sesshomaru through them. Maybe the pups are also curious about Kagome and her different scent and appearance. This encounter could also be a way to bridge the gap between Kagome's group and Sesshomaru, leading to new alliances or at least a truce in the ongoing battles in the feudal era.
One possible plot could be that Kagome and Sesshomaru initially struggle to accept their new situation. But as the pups grow, they see the importance of their family. The pups might have special powers that attract the wrong kind of attention, and they have to protect them.