In the Taisho era, earthquakes frequently struck Gogyo Town. Mao and Otsuya, who had gone to check on the collapsed hillside behind the town, heard from a yokai that a strange Western-style mansion had been built near where the keystone used to quell earthquakes had been enshrined. When the two visited the place, they found a church standing there, which should not have been there.

In the Taisho era, a younger version of Nanaka from eight years prior suddenly appears before her. The cat demon grabs the young Nanaka in its mouth and flies away through the gate of the Gogyo Shopping Street to the Reiwa era. In order to protect the young Nanaka, Mao, in his beast form, sends a guardian shikigami to the present day, but then faints.