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.
Well, it's very likely. Fanfiction is a vast world with all kinds of interpretations. In a family - friendly version of this concept, the story could start with how Kagome and Sesshomaru meet and fall in love, then progress to their family life. Their pups could have unique abilities and personalities, and the story could revolve around their growth and the family's adventures together.
Well, one possibility could be that it creates a huge conflict within the Inuyasha universe. Sesshomaru's pride and his standing among the demons might be affected. Kagome, being from a different world originally, would face a lot of challenges in this situation. Her friends might be shocked and some might not accept it at first.
One main antagonist could be Naraku. He might see this union and the coming of the pups as a threat to his plans. He could try to harm Kagome or the unborn pups to disrupt any potential power shift in the demon world that could come from their existence.
One possible story could be that Rin grows up and her bond with Sesshomaru deepens into a romantic relationship over time. They then have pups, and the fanfiction could focus on how Sesshomaru, who was once so aloof, becomes a protective father. He might teach his pups about the ways of the demon world, while Rin imparts her kind human values to them.
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.
One possible plot could be that Kagome stumbles upon Sesshomaru in the forest while she is separated from Inuyasha and the others. Sesshomaru, being his proud self, initially views her as a nuisance. But as she shows no fear of him and even tries to communicate in her kind - hearted way, he starts to be intrigued by this strange girl with spiritual powers.
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.