And I’m Now In Charge of Infrastructure and Internal Affairs

Niwatoko was a salaryman who got transported into another world one day. There, he led a simple life in the Kingdom which accepted him, but was forced to fight at the frontlines due to the neglects of the nobles. During an attack, he was caught in mortal combat with the princess knight of the enemy country, and he won, capturing her. However, the Kingdom lost the war against that country, and he was handed over to the other side as a prisoner instead. Or so he thought when he was brought before the princess knight he defeated, Rodia, who proposed to him!? In order to live as a part of royalty, Niwatoko made use of his modern knowledge to advise on the establishment of infrastructure, which were all perceived as revolutionary to the people there. To secure his life of comfort, he comes up with varied ideas to the many problems which pop up one after another—. “Haa… This is so troublesome. When can I take a break.” Source: KADOKAWA