The term "Wokou" is often easily regarded as merely a pirate group composed of Japanese people who invaded during the Goryeo and Joseon dynasties. However, this book refers to the conflict with the Wokou as a "war." Can the struggle against the Wokou truly be called a war? Historical records reveal that the Wokou's actions—including looting, murder, arson, and kidnapping—were undoubtedly acts of piracy. However, the Wokou of the late Goryeo period were fundamentally different in nature. At this