One possibility could be a story full of drama. Maybe Kagome initially struggles with the idea of having a child with Koga. She might worry about how her friends, especially Inuyasha, will react. But as time goes on, Koga shows his unwavering support and love for her. He vows to protect their family at all costs. And together, they start to build a new life, away from the chaos of their previous adventures, focusing on the future of their unborn child.
At first, their relationship might be filled with a bit of shock and uncertainty. But as they come to terms with the pregnancy, they would grow closer. Koga would start to understand Kagome's human emotions and needs even more deeply. He might start to make compromises that he never thought he would, like staying in one place for longer to ensure Kagome's safety during the pregnancy. Kagome would see a softer side of Koga and would probably fall more in love with him. Their relationship would transform from a more adventurous, somewhat reckless one to a more stable and nurturing bond.
A plot idea could be that Kagome's pregnancy gives her new powers or a stronger connection to the spiritual world. This could attract the attention of evil forces who want to use her unborn child for their own gain. Koga has to fight off these threats while also taking care of Kagome during her pregnancy. Another idea is that they go on a journey to find a special place or item that is said to ensure a safe delivery for their baby. This journey could be filled with challenges and revelations about their relationship.
The plot could twist when they find out that Kagome's pregnancy is progressing at an abnormally fast rate. This could be due to her connection to the feudal era and the different time - related magic there. It might also be that the baby has some special powers that are causing this rapid development. Additionally, there could be a plot twist where Koga's pack has different reactions to the pregnancy. Some might see it as a sign of weakness, while others see it as a new beginning for the pack.
Another theme is adventure. Given that they are both part of a world full of demons and magic, fanfictions often send them on exciting quests together. For example, they might go on a journey to find a powerful artifact or to defeat a new evil that has emerged. This not only tests their relationship but also shows their individual strengths.
At first, Kagome is likely to be angry. She's a strong - willed character, so being kidnapped goes against her nature. She would probably struggle and try to escape immediately, yelling at Koga about how wrong his actions are.
Another theme is the struggle for acceptance. Koga is a wolf demon and Kagome is a human with her own set of values. Their different backgrounds lead to a struggle where they have to accept each other's differences in these fanfictions. For example, in many stories, Koga has to adapt to Kagome's human emotions and she has to understand his demon nature.
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.
One common theme is the love triangle aspect, with Inuyasha also in the picture. It often explores how Koga tries to win Kagome over despite Inuyasha's presence. Another theme could be adventure, as they are both part of the Inuyasha universe which is full of quests and battles.