Yes, there was a novel called "Inuyasha's Underworld Sword Fate". It was a light novel, a derivative doujinshi novel. The novel described the Nine Serenities Underworld Saber as the interweaving thread, outlining a beautiful story of love and hatred. If you want to read the love story of Kagome and Inuyasha, you might as well try this novel. I hope you like this fairy's recommendation. Muah ~😗