After being killed during a robbery at his part-time job, Akira Miyako, a high schooler and shogi fanatic, is reincarnated as a Demon King.

Faced with overwhelming odds, the young genius uses the tactical eye he honed through shogi to hold his ground.

This unique fantasy epic depicts the fierce battle of wits between the new Demon King and the human strategist, Riol, who stakes the very survival of humanity on their clash.