The Returned Archmage Ran a Factory, and the Money Went Insane

A great mage who once moved the world with magic in his past life. What awaited him after his return was a reality stripped of mana. But he didn’t despair. He converted magical knowledge and principles into technology, and instead of casting spells, he built inventions. Next-generation creations born from the fusion of magic and modern engineering. With every decision the inventor makes, nations move, and the shape of markets and wars begins to change. The story of a magical industry conquering the world begins.