Tide-Line Blue - S01

The disaster known as the "Hammer of Eden" killed six billion people and flooded 90% of the land. Fourteen years later, the New United Nations formed to seek peace on the ruined lands. Keel is a boy living in Yabitsu, a town that prospered thanks to the energy from a nuclear generator brought by the catastrophe. His relative Aoi serves as secretary general of the New United Nations. She sees the catastrophe as a chance to build a new world where nations help one another overcome differences in race and religion. But her efforts to realize that vision fail because nations are unwilling to change. Gould, a military officer, believes the only way to create order is through the military. With the nuclear submarine Ulysses and his crew, including Keel's brother Tean, Gould launches a coup, declaring war on the New United Nations with an attack on Yabitsu.