Riddle Story of Devil

Tokaku Azuma transfers into the prestigious Myoujou Academy, a secluded private boarding school for girls, and is placed in the ominously named Class Black. Behind the academy’s refined façade lies a deadly contest: Tokaku and 11 classmates are assassins assigned to eliminate their gentle seatmate, Haru Ichinose. The first to succeed earns the fulfillment of their deepest wish—no matter how impossible or costly—while anyone who fails in their single attempt is expelled.

Rather than carry out her mission, Tokaku begins to feel unexpectedly drawn to Haru. As the other assassins close in and the stakes escalate, Tokaku turns against the game itself, determined to keep Haru alive even as the classroom becomes a battlefield of suspicion and intent.