Set in a hospital police box that deals with patient disputes, complaints, and other various duties, the story centers on Murai Osamu, a hospital-internal detective, and Sakakibara Shunsuke, a genius surgeon, who clash over their differing interpretations of what "justice" means.

Six months ago, life went dark for the underworld negotiator Kida when his lifelong friend and fellow former outcast Makoto became embroiled in a deadly plot. Makoto had risen to become the head of a powerful trading firm, but the events that unfolded on Christmas Eve put an end to all that. Since then, Kida has continued to drift through life without a single bright spark to light up his life. No...