Seikaisuru Kado

Government negotiator Kojiro Shindo is preparing for a business flight when a vast cube appears over Haneda Airport and absorbs the aircraft. Inside the structure, called Kado, he encounters Yaha-kui zaShunina, a being who wishes to establish contact with humanity.

Shindo agrees to serve as intermediary in negotiations unlike any he has handled. The visitor offers technologies capable of transforming human life, prompting wonder, political conflict, and scientific scrutiny. As each gift raises greater questions, Shindo must determine what progress means and whether his visitor's intentions leave humanity free to choose its own future.