Whispers circulate about a timeless girl who inhabits a forest mansion and emerges solely under the night sky, believed by some to possess a soul within a living doll. Intrigued by these tales, Akari Amano ventures into the woods in search of this enigmatic figure, only to lose her way in the darkness. It is then that she encounters Sophie Twilight, a vampire who shatters myths by abstaining from attacking humans and opting to order blood online instead. Fascinated by Sophie's doll-like allure, Akari decides impulsively to become her roommate, thus embarking on a shared journey.