I'm a Noble on the Brink of Ruin, So I Might as Well Try Mastering Magic

A salaryman wakes as Liam Hamilton, fifth son of a minor house that will lose rank if no one achieves a notable deed within the family line. He studies magic to secure a future and receives a ring packed with spell knowledge. Training lets him cast multiple spells at once, open a pocket space, and form contracts with spirits and beasts. He meets the dragon Radon, accepts her power, and follows old signs to a hidden Promised Land. Pixies he protects evolve into elves after he names them, beastkin swear loyalty, and settlers ask him to rule. He develops the territory with summons, engineering, and new currency while nearby kingdoms probe the borders with scouts and raids. Plots to seize the land fail when he repels knights and heals a cursed girl named Flora who later joins his side. A campaign against vampires ends with the horde pacified and folded into the new nation. Liam advances his sorcery under Radon’s guidance, raises allies, and defends the Promised Land as a kingdom that grows around his experiments and his duty.