Easygoing Territory Defense by the Optimistic Lord - S01

Van, the fourth son of a noble family, recalls his past life as a Japanese office worker when he's just two years old. Though his adult mind in a child's body makes him seem like a prodigy, everything changes at age eight when he awakens "Production Magic." In a house that values combat skills, his crafting ability is seen as useless for battle, and he's exiled in shame to manage a remote rural town. Armed only with his maid, his past-life memories, and his so-called "worthless" magic, Van must find a way to turn this struggling village-and his own fate-around.