The theme of power inheritance might be explored. Inutaisho could pass on some of his unique powers or abilities to Inuyasha, and this could be a central part of the story.
Another theme could be self - discovery for Inuyasha. Meeting his father, Inutaisho, could make Inuyasha re - evaluate who he is, his place in the world, and his destiny as a half - demon. This could lead to a journey of self - growth and understanding.
In this fanfiction scenario, Inutaisho could guide Inuyasha in his journey to become a better demon. He might teach Inuyasha about the history of their kind and how to control his powers more effectively. This could lead to Inuyasha having a new - found sense of purpose and growing in strength and character.
In a 'Kagome Meets Inutaisho' fanfiction, their meeting could be filled with tension. Kagome, coming from a different time and with her own set of beliefs and values, might initially clash with Inutaisho. However, as they get to know each other, they could find common ground. Inutaisho might be intrigued by Kagome's modern - day thinking and Kagome could learn more about Inuyasha's past through him. This encounter could also potentially bring about a new alliance or a deeper understanding between the two characters.
Perhaps Inuyasha discovers a hidden portal. He enters it out of curiosity and ends up in the past where he witnesses his father Inutaisho and mother Izayoi meeting. This could be a moment filled with shock and realization for Inuyasha as he sees the origin of his own existence.
One possibility is that Inutaisho would test Kagome. He was a powerful demon and might want to see if Kagome was worthy of being in his son's life. Another thing could be that he gives her a mission related to Inuyasha's destiny.
In a fanfiction where Kagome meets Inutaisho first, it could lead to a significant alteration in the Inuyasha storyline. Maybe Kagome's presence would influence Inutaisho's decisions. For example, if he was planning some sort of battle or alliance, Kagome's knowledge from the future (even if it's just a bit of future knowledge) could sway him. It could also create a new dynamic in the relationship between the dog demon tribe and humans, as Kagome is a human with a connection to the future and Inutaisho is a powerful dog demon.
They could form an unexpected bond. Inutaisho and Izayoi might see Inuyasha as a strange but endearing figure. Inuyasha, on the other hand, could gain a new understanding of his parents. For example, he might see the love that his father had for his mother, which was something he may not have fully grasped before.
She could be in awe of him. After all, he's Inuyasha's father and a very powerful demon. He might question her presence in his territory. Kagome would have to quickly explain herself, which could be difficult since she's from a different time.
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 theme is self - discovery. As the character is taken across time, they may learn more about themselves and their place in the Inuyasha universe. Another theme could be the power of fate. The time - traveling might be a way to show that certain events are meant to happen no matter the time period.
In many such fanfictions, a common theme is the cultural clash or่ๅ (since they come from different backgrounds in the original story). This can lead to interesting character development and relationship dynamics. There may also be themes related to protecting each other and the world around them, as their relationship might be seen as a source of power to face external threats.