Well, there could be a conflict. Sesshomaru's mother is from a different world and has her own set of values. Inutachi might unknowingly violate some of her unspoken rules. This could lead to a tense situation where they have to quickly figure out how to make amends or face her wrath. It's like when they first entered the feudal era and had to learn the ways of that world all over again.
One possibility is that there would be an initial sense of unease. Inutachi, being a group with different personalities and allegiances, might approach Sesshomaru's mother with caution. Maybe they would be in awe of her power and grace, given Sesshomaru's own formidable nature. For example, Kagome could be curious about her knowledge of the feudal era's magic and lore.
Perhaps they would form an unexpected alliance. Sesshomaru's mother might see something in Inutachi that could be useful in her own plans or she might recognize their good intentions. She could offer them her protection or knowledge in exchange for their help in a matter. This could be a turning point in their adventures, opening up new storylines and character developments.
It would likely cause a shift in the power dynamics. Inutachi has been managing on their own for a while, but Sesshomaru's mother's presence would change that. She might be much more powerful and her decisions could influence the direction in which Inutachi's journey is headed. Say, she could decide to send them on a new quest or protect them from a new threat.
Well, Kagome could end up helping younger Sesshomaru when he is injured. This would be a big shift in their relationship as Sesshomaru is not one to usually accept help from a human. But since he is younger, he might be more vulnerable and thus more likely to accept her aid.
If Kagome meets Sesshomaru in modern time in fanfiction, it could start with Kagome being in a busy city street and suddenly sensing a strange and powerful presence. She turns around and there is Sesshomaru, looking out of place in his traditional attire. At first, Sesshomaru might be tempted to attack Kagome, thinking she is some sort of nuisance in this new world he has found himself in. But Kagome, being the kind - hearted person she is, tries to defuse the situation. She might offer to help him find a way back to his own time or at least get used to the modern world. This could lead to a series of comical situations, like Sesshomaru trying to fit into a small elevator or being startled by the sound of a cell phone ringing. As time passes, they could form an unlikely friendship, with Kagome learning more about Sesshomaru's past and him starting to respect her more.
In such a fanfiction, Naruto might have an emotional moment. He could finally learn more about his family's past directly from his mother. Maybe she would share some secret jutsu or wisdom with him.
The fanfiction might start with Natsu's search for his mother. When they meet, there could be some initial shock or disbelief. His mother could look at him with great love and pride. They might have a long conversation about his life so far, his friends, and his adventures. She could also introduce him to parts of his heritage that he was previously unaware of, which could shape his future actions and decisions in the story.
One common theme is friendship. Since they are from different 'worlds' (in the context of the fanfiction), their coming together often leads to the development of a unique friendship. For example, they might learn about each other's strengths and weaknesses and support each other.
In this fanfiction, perhaps Goku finally gets to know about his family's past. His father might pass on some special Saiyan techniques or knowledge to him. And his mother could share some warm family stories that Goku has missed growing up.
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.
Blu might be overjoyed to meet his mother. He could immediately start sharing his adventures with her.
Well, he might be completely bewildered by all the modern technology. For example, seeing cars moving at high speeds on the roads could startle him. He could also have trouble adjusting to the social norms. Maybe he would accidentally draw too much attention to himself because of his unique appearance and old - fashioned ways of speaking.