It is a book that is deliberately difficult to stomach. Tsutsui uses the "grotesque" not for shock value alone, but as a tool to expose the mechanics of oppression. When we see the Yapoos prepared as gourmet meals, the horror forces the reader to confront the reality of how societies commodify the "other."
If you are looking for the "market" in their discography, this album is a essential listen. It marks a shift towards a more polished, yet still unsettling, pop sound.
Since "Yapoos Market" is a seminal work by Japanese sci-fi grandmaster Yasutaka Tsutsui (originally published in 1981), and given the specificity of "21" in your request, this feature looks at the enduring legacy of the novel and how it applies to the 21st century.