Transported to a fantasy realm by the fabled summons "O, Hero!", Kazuya Souma's unexpected adventure takes a divergent path. Rather than pursuing legend, he unveils an ambitious strategy to fortify the kingdom's economy and military might, prompting the king to relinquish his throne. Now crowned and bound by an arranged marriage to the princess, Souma shoulders the weight of rulership. He assembles a brilliant council of talented strategists and gifted warriors to aid his transformative vision. Five exceptional individuals converge around the newly crowned sovereign, each bringing remarkable abilities and specialized expertise. What destiny awaits this kingdom under such pragmatic leadership? A revolutionary administrative fantasy where a summoned hero reshapes a realm through strategic governance, kingdom building, political maneuvering, and the bonds forged across human and demi-human civilizations amid warfare, magic, and intricate schemes.