Tide-Line Blue

In a world irrevocably altered by the "Hammer of Eden" catastrophe, where vast expanses of land have succumbed to flooding and six billion lives were lost, the New United Nations emerges fourteen years later, striving to foster peace amidst devastation. In the seaside town of Yabitsu, Keel navigates a life shaped by the remnants of this disaster, thriving on the energy generated by a nuclear power plant that stands as a testament to human resilience. His cousin Aoi, the secretary general of the New United Nations, is driven by a vision of unity, seeking to bridge the divides of race and religion in a bid to rebuild society. Yet, her aspirations collide with the harsh reality of entrenched nationalistic sentiments that resist change.

Meanwhile, military officer Gould believes that true order can only be established through force. Commanding the nuclear submarine Ulysses, he is determined to impose his vision of governance, even if it means declaring war against the very organization seeking peace. As tensions escalate, the fates of Keel, Aoi, and their world intertwine, setting the stage for a gripping clash of ideals and survival in an unforgiving landscape.