In Ryuuou no Oshigoto!, the world of shogi revolves around strategy, pressure, and the prestige of the Ryuuou title. Yaichi Kuzuryuu shocks the competitive scene when he becomes the youngest player ever to claim the Dragon King crown after a stunning victory at the grand championship. Yet the triumph does not bring easy glory: within the shogi community, many question whether he truly deserves the honor, and some dismiss him as the worst Ryuuou in history.
Haunted by the promise he made to a young girl named Ai Hinatsuru—he vowed to mentor her if he won—Yaichi finds that promise returning to his life when Ai suddenly appears at his door. Although he reluctantly accepts the role of teacher, the relationship quickly becomes more than a simple lesson in board positions and openings. As Yaichi and Ai train together, she pushes to uncover her hidden potential while he struggles to live up to the title he earned. Their bond grows through the discipline and intensity of shogi, with both of them seeking confidence, purpose, and a reason to keep moving forward.