きさらぎ街道　と呼ばれる大昔からある古い街道。
狭い意外は普通の道だったのだが、高度成長期あたりから幽霊騒ぎなどが起き始める。
最初は曖昧な目撃例だけだったが、証言が増えるに連れて交通事故も増え始め、更には街道沿いの集落で原因不明の感染症や失踪が相次ぐようになる。
そして集落が全滅すると今度は通行する者にも失踪者が出始め、中には車ごと消えてしまう者まで現れた。
あまりに異常な事態が続くので、当局はこの街道を封鎖し、調査を始めるも逆に調査隊から多数の死傷者を出してしまう。
結局何が起きているのか分からないまま街道は封鎖され、現在に至っている。
今でこそ平仮名表記だが昔は鬼（きさらぎ）街道と呼ばれていた。

This is the story of an old highway that has been around for a very long time called the "Kisaragi Highway".
Apart from being quite narrow, it was otherwise a normal looking road. But ever since the time of Japan's post-war economic growth, there have been many disturbances on this road caused by ghosts.
To start with, there were only vague eye witness reports, but as the reported sightings increased, the number of traffic accidents also started to rise. In addition, people from the villages located alongside this highway started to disappear and their inhabitants also started suffering from infectious diseases of unknown origin.
Once the villages were obliterated, then it was the passers-by turn to start disappearing, and there were even cases when whole cars would disappear as well.
As there were so many of these strange occurrences happening, the authorities decided to block off the highway. Although an investigation was launched, many members of the research teams started to become injured and some even ended up dead.
As a result, the highway has remained closed until now, and the cause of the strange occurrences still remains a mystery.
Although nowadays in Japanese "Kisaragi" is written using the hiragana script, in the olden days the kanji character for "Oni" used to have an alternative reading pronounced "Kisaragi".