Kamui, a powerful psychic, must confront his destiny as the world teeters on the brink of destruction. He is torn between two factions: the Dragons of Heaven, who seek to protect humanity, and the Dragons of Earth, who believe humanity's destruction is inevitable. Kamui's choices will determine the fate of the planet, forcing him to grapple with his own immense power and the conflicting desires of those around him.

The X/1999 manga is celebrated for its breathtaking, intricate artwork and its mature, poetic exploration of apocalyptic themes. Readers often highlight the compelling, albeit tragic, narrative centered on Kamui's struggle with his destiny and the visually stunning depiction of supernatural conflict. The series is noted for its dark tone and philosophical undertones, which resonate with an audience appreciative of complex, character-driven stories. While the story's conclusion has been a point of discussion due to its serialization issues, the overall artistic merit and thematic depth are widely acknowledged.