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In 2050, global warming has submerged a significant portion of Japan, including Tokyo, crippling the nation's economy. The Japanese government forms JESAS, a military foundation with sinister intentions, including the disposal of nuclear waste into space. To protect itself, JESAS develops R.B. Robotic Weaponry, piloted by individuals with "A.I. (Accurate Intuition)". Opposing JESAS is the Green Frontier, a united protection agency dedicated to saving the Earth. The series follows the intertwined destinies of JESAS pilots Kanna and Kazuto, and Green Frontier's Doota Kang and Mira Yu. These four young individuals, bound by love, friendship, and their sense of duty, will ultimately determine the fate of the planet. The conflict explores themes of environmentalism, governmental corruption, and the power of human connection.