If Kagome and Sesshomaru got a lust potion in a fanfiction, it might start with confusion. They may not understand what's happening to them at first. Then, as the effects of the potion take hold, they could find themselves in situations where they are forced to interact in ways they never have before. Maybe they end up on a journey together to find an antidote, all while dealing with their new - found and unwanted desires. This could lead to some character development as they learn more about each other and themselves during this strange ordeal.
Well, if such a fanfiction existed, perhaps the lust potion could cause them to initially act out of character, with Kagome being more forward towards Sesshomaru and Sesshomaru having to struggle with these new, unexpected feelings. It could lead to a lot of internal conflict for Sesshomaru as he tries to maintain his usual stoic self.
I'm not sure if there is a specific fanfiction exactly about that. There are a lot of fanfictions in the Inuyasha fandom, but this particular concept might be a bit rare or not conform to the general tone of many fan works.
Perhaps Sesshomaru sees some value in Kagome. Maybe he realizes that she has certain powers or knowledge that could be useful to him in the future, so he decides to save her from Inuyasha.
The theme of sacrifice could be present. Sesshomaru might have to sacrifice his solitary lifestyle and some of his pride to be there for Kagome and the baby. Kagome may have to sacrifice her own plans and dreams for a while to focus on the pregnancy. Additionally, the theme of unity could be explored as they have to be united in facing the challenges that come with her pregnancy, such as potential threats from other characters who don't approve of their relationship.
One possible theme could be power dynamics. Maybe exploring how Inuyasha's supposed abuse changes the power balance between him, Kagome, and Sesshomaru. Another theme could be the distortion of relationships. It takes the normal relationships in the original series and twists them into something darker.
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.
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.
In fanfiction, a Sesshomaru and Kagome pregnancy can be a very interesting plot. It often brings new elements to their relationship. Writers might explore how they handle the upcoming parenthood, considering their different personalities and backgrounds. Sesshomaru, being a powerful demon, and Kagome, a strong - willed human girl, would face unique challenges and joys during this time.
One possible plotline could be that Sesshomaru initially struggles with the idea of becoming a father. He's always been a lone and proud demon, and the concept of having a family is foreign to him. Kagome, on the other hand, is excited but also worried about how Sesshomaru will react. As the pregnancy progresses, Sesshomaru starts to feel a sense of protectiveness over Kagome and the unborn child. He may go on quests to find rare herbs or items to ensure a healthy pregnancy. Another plotline could involve the reactions of their friends and enemies. Their friends might be supportive but also a bit surprised, while their enemies could see the pregnancy as a weakness to exploit.
One possible plotline could be that Kagome and Sesshomaru are forced to work together to defeat a common enemy. During their journey, they gradually develop feelings for each other. A moment of danger might lead to an unexpected kiss, which then makes them both realize their true emotions. They would then have to deal with the implications of their new - found relationship in a world where their two species have long been at odds.
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.