Reincarnated as the Grand Duke's Third Son

Summary

He died as a mercenary, unable to rise in the world because of his humble bloodline. But when he opened his eyes again, he was told he was now the son of an Archduke. With the family, status, and talent he had always dreamed of finally in his hands, how far could he climb? A former mercenary captain turned third son of an Archduke—his bold and unconventional noble life is about to begin.