Kim Jung Nan

Yoon Hyun Woo is a devoted, hard-working, and loyal secretary to the Soonyang chaebol family, which runs the lucrative Soonyang Group business empire, founded by Jin Yang Cheol. During a power struggle between Jin Yang Cheol's children for control of the empire, Hyun Woo is ruthlessly betrayed and killed under the orders of an unknown member of the chaebol family. Miraculously he wakes up as a kid inside the body of the youngest member of the family – Jin Do Jun. After he realizes what has happened, Yoon Hyun Wo plots to use his new “identity” to formulate a hostile takeover of the group – and punish the people who killed him. But, will the cold-blooded and money-hungry CEO of Soonyang Group, one who firmly believes in right of primogeniture, be so easy to win over or conquer? Will Hyun Woo be able to wrest the reins from Jin Yang Cheol's children? And what role will be played in all this by a dogged public prosecutor named Seo Min Young, nicknamed “Soonyang Group Grim Reaper”? (Source: LuckyGirlGwenIce at MyDramaList) ~~ Adapted from the web novel "Youngest Son of a Conglomerate" (재벌집 막내아들) by San Gyung (산경).

An ace emergency care doctor loses his license after being scapegoated in a malpractice case caused by the hospital director. Determined to get revenge, he becomes a prison internist, aiming to befriend powerful inmates, tycoons, celebrities, athletes, and replace the prison’s chief doctor to build influence and take down the hospital that betrayed him. (Source: MyDramaList)

Kim Su Yeong is a newly elected member of the National Assembly. He is a member of the conservative New Korea Party. Prior to his election, Kim Su Yeong worked as a judge, but became pressured by higher-ups and decided to enter the political world. Now, Kim Su Yeong becomes involved in a tangled situation with national assembly member No Min Yeong, who entered the political world after her sister's death. No Min Yeong's sister was a presidential candidate. No Min Yeong is also a member of the Progressive Labor Party, which only has two members in the national assembly. Kim Su Yeong and No Min Yeong then begin to have romantic feelings for each other. (Source: theTVDb)