The boy Ryunosuke and his younger sister Gin are orphans. Ryunosuke Akutagawa is pale-skinned with short black hair, the longer strands on the sides closer to the tips are white. Gifted and has the ability to turn his clothes into sharp, wriggling blades. Gin Akutagawa is pale-skinned with long black hair and gray eyes, and is more silent. Without the ability.