Isekai no Binbou Nouka ni Tensei Shita node, Renga wo Tsukutte Shiro wo Tateru koto ni shimashita @COMIC

In a fantasy world plagued by the decline of its royal family and unending turmoil, a remote village suffers through bitter cold and crushing poverty. Born into this harsh environment is an infant named Ars, who harbors a secret: he retains the memories of his previous life, where he was deeply passionate about city-building simulation games. Armed with this modern knowledge and a unique magical ability, the young boy resolves to lift his struggling community out of destitution by constructing homes with his own hands. Ars’s ambitions quickly expand beyond simple shelter. He hatches a rare servant beast to aid his efforts, cultivates and clears the unforgiving land, and begins laying down Roman-style roads and erecting grand castles. Through sheer ingenuity and magical craftsmanship, he transforms a desolate settlement into a thriving stronghold. This is the heroic chronicle of a remarkable boy whose unprecedented achievements will eventually earn him the revered title of "living god."