In fanfiction, Inuyasha and Kagome's relationship often deepens in many interesting ways. Some fanfictions focus on their adventures together which strengthen their bond. They might face new and unique challenges that force them to rely on each other more, thus enhancing their romantic feelings. For example, they could encounter a powerful demon that only their combined powers can defeat, and during this process, they realize how much they mean to each other.
In many Inuyasha and Kagome romance fanfictions, their relationship is portrayed with more emotional depth. Writers may explore their cultural differences more deeply. Kagome, coming from the modern world, and Inuyasha, from a feudal era, have different outlooks on life. Fanfiction can play with how they overcome these differences and grow closer. It's often a journey of understanding and acceptance that makes their romance more captivating.