Reborn Rich (Manhwa) Vol. 1 (manga)

For thirteen years, Hyeonwoo was a loyal employee of the Soonyang Group, the largest corporation in South Korea. He worked his way up from the bottom of the corporate ladder, only to be betrayed by the very company he dedicated years of his life to. With nothing to show for all of his work, he resigns himself to death… only to be reborn years in the past as Dojun Jin, the grandson of the founder and CEO of Soonyang! As the youngest grandson, he stands no chance of inheriting the company, but he refuses to accept his fate.

He’ll get revenge against the rich and powerful family who are now his relatives by rising to the top and becoming the head of the family himself!