Reincarnated as the Grand Duke's Third Son

Born at the bottom of society, Jake survives by leading Sabertooth, a mercenary group loyal to him. Yet he is ultimately betrayed and killed by the nobles he served. But instead of death, he awakens to a new life with soft, frail hands and the title of the third son of House Valdek, the most powerful family in the empire, rivaling even the crown. Surrounded by wealth and splendor, Jake realizes he has been granted a second chance to fulfill his ambition. So he sets off, determined to rise as high as possible. Look out, world, here comes Lucian Valdek!

(Source: Webtoon Entertainment)