"World War Blue" is a manga series that blends elements of fantasy, action, and strategy, set in a world inspired by the rivalry between video game consoles. The story unfolds in the fictional world of Consume, divided into nations representing iconic gaming systems: the Segua Kingdom, the Ninterdo Empire, and the Sonysta Kingdom. Each nation is locked in a fierce struggle for dominance, mirroring the historical console wars of the gaming industry.

The protagonist, Gear, is a young soldier from the Segua Kingdom, known for its blue-themed aesthetics and advanced technology. Gear possesses a unique ability called "EX," which grants him extraordinary powers in battle. His journey begins when the Segua Kingdom is attacked by the Ninterdo Empire, a militaristic nation with a focus on traditional values and red-themed designs. The conflict escalates as Gear and his comrades, including the skilled warrior Nel, fight to defend their homeland and uncover the deeper motives behind the war.

As the story progresses, Gear encounters characters from the Sonysta Kingdom, a technologically advanced nation with a purple-themed identity. The Sonysta Kingdom initially appears neutral but becomes increasingly involved in the conflict, adding layers of political intrigue and shifting alliances. The narrative explores themes of loyalty, rivalry, and the consequences of technological advancement, as the nations vie for control over a powerful artifact known as the "Mother System," which holds the key to ultimate power in Consume.

The series features a diverse cast of characters, each representing different facets of the gaming-inspired world. Notable figures include Excalibur, a legendary warrior from the Ninterdo Empire, and Princess Teana of the Segua Kingdom, who plays a pivotal role in the political dynamics of the war. The interplay between these characters drives the plot forward, with battles, betrayals, and alliances shaping the fate of Consume.

"World War Blue" combines fast-paced action sequences with strategic warfare, drawing parallels to real-world gaming history while crafting a unique fantasy narrative. The manga’s world-building is detailed, with each nation’s culture, technology, and military tactics reflecting their gaming-inspired origins. The story balances intense combat scenes with moments of character development, exploring the motivations and relationships of its cast as they navigate the complexities of war.