Kurayami Dance is a manga based on the original draft for Shadows of the Damned, which was a loose adaptation of Kafka's The Castle.

Wataru, a man who went 300 km/h on a motorcycle. Due to the injuries he sustained, he spent three years in the hospital. When Wataru wakes up, he sees a completely changed hometown and a newly created Iron Empire. He then receives an invitation from the empire... A mysterious journey begins!