Since I'm not sure which specific 'emi yusa light novels' you're referring to, in general, light novels often have unique art styles on their covers. They might also have a fast - paced plot.
One common theme is growth. Baki is often on a journey of self - improvement in his fighting skills, and Kozue is there to support him. So, many fanfics show how their relationship evolves as Baki grows stronger.
Well, without knowing much about Tateno Yusa's web novels precisely, it might be the themes they explore. If they deal with unusual or thought - provoking topics that are different from mainstream novels, that could be a factor. Also, the pacing of the story, how it builds up tension and resolves conflicts, could contribute to its specialness.
Sure. 'Emi Yusa' might not be a very common name in the light novel world known to me. It could be a relatively niche or new work. You might try searching on specialized light novel platforms or forums for works related to this name.
One popular 'baki x kozue fanfic' is 'The Journey of Baki and Kozue'. It focuses on their relationship development in a more adventure - based setting, with Baki's strength and Kozue's supportiveness being key elements.
Sorry, I don't have detailed knowledge about Tateno Yusa's web novels. However, many web novelists are known for their unique storytelling. Tateno Yusa might have works that are characterized by interesting characters and engaging plots. You could look for reviews or fan communities related to this author to find out more.