The Conqueror from a Dying Kingdom: Volume 3

Yuri continues his life at the Knight Academy, where he trains in the art of war and deepens his ties with Princess Carol and Myalo, a child from a powerful witch family. When he’s not busy with classes, he also oversees a papermaking business, which is expanding rapidly thanks to memories of technology from his past life. To many, Yuri’s only problem seems to be the royal capital’s corrupt witches, who eye his company’s profits enviously. Unfortunately, Yuri knows better. His homeland remains on the path of destruction, and a bleak future lies ahead of him and others. It’ll take more than wealth to save his loved ones from death or enslavement at the hands of Kulati invaders. As Yuri begins to grapple with problems that extend beyond the royal capital and even the borders of the Shiyalta Kingdom, his intellect, understanding of celestial navigation, and growing skills as a kingeagle rider may prove invaluable.

[From J-Novel Club]