The Chaebeol’s Youngest Son is a Manga/Manhwa/Manhua in english language, Drama series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

To get back 13 years of hard work! Yoon Hyunwoo, who lived like a servant and abandoned, thought it was all over. But when he was killed he woke up in the young body of Jin Dojun, the grandson of Soonyang Group’s Chairman, Jin Yangcheol! However, Jin Dojun, the youngest son of the chaebol family, is far from the right to inherit the group. Will he be able to become the final winner in this family political drama? Yoon Hyunwoo’s exhilarating revenge drama to swallow up the Soonyang group begins!