This is the second episode of 9-nine. When a large earthquake struck the university town of Shiromitsugawa, the sacred treasure in the Hakuda Tsukumo Shrine was damaged, and mysterious objects called "artifacts" began to appear from a parallel world. These artifacts granted special abilities to those who possessed them.

There was an incident where someone abused these powers and turned people into stone. Kakeru, who has a strong sense of responsibility, assisted Miyako in seeking the culprit. His innocent little sister, Sora, also joins them in investigating the serial petrification incidents as they unveil a mysterious group and hidden feelings.

[Edited from Hau~ Omochikaeri~!]