Zero-gou

"It's man's creation, a human sacfifice, to oppose the force of the Nanagou. It is our ultimate weapon, Zero-gou."

- Murasaki Iyo, Chapter 93

The Zero-gou (零郷, Zero-gō) is an artificial Nanagou developed by the Senate, located in the lowest floor of their basement, B108. It currently hosts all member of the Lost Generation within it.

The Zero-gou is nearly identical in height, weight and diameter to the Nanagou. Just as the Nanagou are marked with their respecitve number, the Zero-gou is marked with "零". At the bottom of the Zero-gou are several doors equally spaced around its perimeter, each labeled with the names of members of the Lost Generation.