"Useful paper" could be a mistranslation. They might mean a useful article, paper, or thesis. Alternatively, it could be referring to a "paper" in the sense of a document or an art paper, especially if related to Yayoi Kusama.
Since Yayoi Kusama is known for her infinity rooms, pumpkins, and themes of infinity and repetition, connecting her work to a story about touching a sleeping woman might be a stretch unless there's a specific piece that uses such a metaphor. Alternatively, the user might have confused the title of a specific artwork or a concept in her work with the story they mentioned. eng touching a sleeping married woman yayoi exclusive
Another possibility is that the user is referring to a specific academic paper that uses a case study or metaphor involving touching a sleeping married woman and relates it to Yayoi Kusama's art or Japanese cultural context. In that case, the user might be looking for an English-language resource that discusses such a topic. "Useful paper" could be a mistranslation