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On the huge fantasy star, countless countries are engaged in fierce battles and oppression for their respective civilizations. As the country upgrades, the importance of individual strong men becomes more and more prominent. How can a federation without strong men catch up with those civilizations that have developed for countless years? The protagonist from the adventurer village returns to the civilized world after meeting a girl who ran away for adventure, develops source energy, and challenges the legendary map. And the war between the galaxies has quietly begun...