Shūsuke Michio (1975–) takes his pen name from the mystery writer Michio Tsuzuki, one of his idols. Michio first became interested in reading in high school, when he was inspired by the works of Yasunari Kawabata and Osamu Dazai. He began writing short-shorts in college and continued producing fiction after graduation in his time away from work. His first break as an author came when he received the Horror and Suspense Special Prize for Se no me (Eyes in the Back) in 2004; the following year he quit his job to write full-time. In 2009 his novel Karasu no oyayubi (By Rule of Crow’s Thumb) earned the Mystery Writers of Japan Award in addition to a Naoki Prize nomination; in a testament to the consistently high quality of his work, he was nominated for the biannual prize four more times on his way to winning it in 2011 withTsuki to kani (Moon and Crab). Other honors include the 2010 Yamamoto Shūgorō Prize for Kōbai no hana (Flowers of Light), a collection of linked short stories. With his knack for easily crossing over genres such as horror and the mystery, Michio is a promising hitmaker among the new generation of writers.
Scenes of killing crabs are so cruel and gross that this book will not sell in Western countries with many supporting animal rights. I know the characters are teenagers, but they irritate me with their selfish, perverse thoughts. I wish my aunt had read this book before she remarried and let her son astray. A child might understand and support his/her parent of the same sex when the parent is in love, but it's difficult for a child to support his/her parent of the opposite sex probably due to rivalry and jealousy.