In the 14th year of the Tenpo era, there was a secret shrine for “Bansha Aratamesho” under the city of Edo. Bansha Aratamesho is not an official organization. It consists of a man who lost his memory, a man who was raised in a mountain and a girl who dresses up in a man’s outfit. Their special powers are yet to be known, but they all have special abilities that help slay the Yoh-is. The code name given to them is – “Ayashi”. Ayashis collect all types of information that seems bizarre. With thorough investigation, they locate the Yoh-is and hunt them down.