～This work is a fictional piece and bears no relation to real individuals, organizations, or similar entities～

☆ The main story of this work has been completed as Part One.

From a system perspective, additional content such as short stories may be added, so it has not been marked as "finished."

Therefore, please disregard any "non-update period" notifications displayed above.

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～Commercially published by Seikaisha on February 16, 2016, as "Galaxy Federation Japan I"～

The work published here is the original "Galaxy Federation Japan" and is not a "book adaptation" such as a digest version. We kindly ask for your continued readership and support for this work, alongside the book version.

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In the year 201X, a massive alien spaceship arrived in Japan. This unprecedented event shook nations worldwide, leading to a situation that overturned the global order from its foundations. ...Though extremely friendly, they expressed a desire to interact only with the specific nation of "Japan," rather than the entire global community. Apparently, they had no interest whatsoever in other Earth nations. Furthermore, these aliens freely disclosed and provided their exceptionally advanced scientific capabilities to Japan. Nations around the world, especially the United States, Russia, China, and the EU, feared the collapse of the global power balance due to the aliens' treatment of Japan.

Why do the aliens fixate on "Japan," a small island nation on Earth, and show interest only in it? This was connected to a certain ancient Japanese tale and one alien woman...