Colorless Vol. 6

"In a world where all humanity has mutated into strange new forms, Chie is the odd one out. She looks exactly like the humans of ages past. It's because she's an android--but who made her, and why? The answers to those questions might finally be in her grasp, hidden somewhere in the deserted city of Chuudoh. But the Order still has plans for Chie and Avidia, as they prepare another offering, this time to create a deity of cold and bitter blue..."--From publisher's description