Treasure Island

To survive, a man hacked into a political slush fund worth 2 trillion won. The other man is a powerful shadowy figure, who loses 2 trillion won by killing a man without knowing that he was hacked.
Seo Dong Ju works as a leader in the chairman's secretary office at Daesan Group. He is known as the "Daesan Man," someone who lives dies for Daesan Group's interests, but, he hides his elaborate and passionate ambitions deep within his mind. His ultimate goal is to entirely consume Daesan Group when he has the chance.
Yeom Jang Seon is a law school professor and the former director of the National Intelligence Service. He is the most influential person in the South Korean political world. He even controls the kingmaker behind the scenes. Yeom Jang Seon feels the zenith of joy when he wields money and power as he pleases. He is the type of person who feels alive only when he has control over everyone like a marionette puppet.
(source : mydramalist)