The Yamata no Orochi myth is set along the Hii River in Izumo, Shimane, with Mount Sentsu named as the battlefield and Yaegaki Shrine and Susa Shrine honouring Susanoo afterwards. The serpent's sword ends up at Atsuta Shrine in Nagoya.
The route follows the Kojiki story: the god Susanoo sees a chopstick floating down the river, meets a family upstream, and defeats an eight-headed serpent with sake. Every location is a traditional identification of a mythical event, not a proven site.
Root Letter is set in Matsue, Shimane, and its backdrops copy real places: the Shimane Art Museum, the Kyomise shopping street, Lake Shinji, Yaegaki Shrine and Matsue Castle.
A man travels to Matsue to find Fumino Aya, a pen pal who vanished 15 years earlier, and questions her old classmates one by one. The route follows five real places that the game turns into scenes, from the lakeside city to a shrine tied to the Yamata-no-Orochi legend. The game's order of visits is not documented, so the stops are a sequence, not a timetable.
The Kojiki, Japan's oldest surviving book, sets its myths in real places: Izumo, which yielded the land, the cave at Takachiho where Amaterasu hid, Kirishima, one candidate for her grandson's descent, and Ise, said to keep her mirror.
This route follows that story to seven places, from Izumo to Takachiho, Kirishima and Ise. The myth is what the text tells; the shrine foundings and excavations are documented history, and each stop keeps the two apart. Several sites are traditional identifications that rival places also claim.
