The book investigates the legend and reported encounters with the Hibagon, a creature akin to Bigfoot, in Japan. The narrative centers on an American university student's firsthand account of an encounter in Shobara, Japan, near Mt. Hiba. It delves into the history of the Hibagon since its initial reported sighting in 1970, exploring its place within Japanese folklore and ancient myths. The story is presented as an exciting adventure set against the backdrop of Mt. Hiba and the Tomb of Izanami no Mikoto.

The description suggests a book that blends personal testimony with historical and folkloric research into the Hibagon phenomenon. It appears to cater to readers interested in cryptozoology, Japanese legends, and tales of survival. The narrative likely aims to be engaging and adventurous, drawing on the mystique of Mt. Hiba and its associated myths.