World Reorganization: Tides of Civilization

The world is divided into four major blocs: the Asia-Pacific United Front (APUF), centered on China and including Japan, South Korea, the Southeast Asian Alliance, Australia, and Pacific island nations, dominating the Western Pacific and Indian Ocean affairs; the Atlantic Treaty Organization (ATO), a transatlantic alliance of the United States, the European Union, the United Kingdom, and Canada, controlling the Atlantic and Eastern Pacific; the Southern Development Community (SDC), composed of the South American Alliance, the African Union, and South Asian subcontinental nations, rich in resources but technologically lagging; and the Eurasian Independent Union (EUA), comprising Russia, the five Central Asian states, and some Middle Eastern countries, spanning the Eurasian continent with formidable energy and military strength. The disaster originates from the deepest point of the Mariana Trench—Challenger Deep—where a giant fissure over ten kilometers in diameter suddenly appears, known as the 'Abyss.' Unknown life forms emerging from it possess extreme infectivity and evolutionary capabilities. — Description from novelcodex.org