Tantei Kibukawa Ryousuke Jikentan 'Ane no Kabe'

Once upon a time, there was a serpent with a fierce temper.
The villagers feared the serpent, and once a year, they would offer their daughters to the serpent to appease his wrath.
One day, "Anesama", who was chosen for that year's sacrifice, said, "Build me a storehouse.
Build me a storehouse. And paint the walls of the storehouse with my hair. I will take care of it.

The story begins when "Mirokuin Renji" a freelance writer who makes his living writing occult articles, and his assistant, "Saiko Izayoi" visit I Prefecture, a snow country, to report on "Anesama's wall," a legend passed down in the region.

The story begins with a visit to a storehouse in I Prefecture, a snow country, where an image of "Anesama" still appears on the wall of the storehouse where "Anesama's wall" is said to have taken place.

The legend tells the story of a young girl who took her own life and the life of a giant serpent as a companion to kill it.
However, the storyteller continues.
Anesama did not lose her life because of the curse of the serpent. She was killed.
In the quietly falling snow and freezing storehouse, she stands there as if she wants to say something....