Dream Life: Yume no Isekai Seikatsu

A world-weary, middle-aged engineer finds his life unexpectedly reset when he is reincarnated into a fantasy realm as Zack, the young son of a frontier feudal lord. Shortly after his rebirth, he receives a divine mandate from God himself: to prepare for the monumental task of guiding the world’s future hero. Accepting this sacred responsibility, Zack dedicates his youth to rigorous training, mastering both swordsmanship and magic to ensure he will be ready when the time comes. However, Zack quickly realizes that true strength extends far beyond martial prowess. Driven by his past life's knowledge, he takes it upon himself to modernize his domain, spearheading vital reforms in public hygiene and education to uplift the lives of those around him. His efforts eventually lead to the development of a promising new local product, which inadvertently awakens a long-dormant passion within him—the art of brewing alcohol. Rekindling this forgotten dream sparks a profound sense of purpose, transforming his second chance at existence into something truly extraordinary. What begins as a solemn divine mission ultimately blossoms into the beginning of his ideal "Dream Life."