O Rei (2017)

Both are fast pace. They have good story-telling that's why you won't be feeling bored watching it. Both story is about politics and crime... I highly recommend Inside Men if you like these type of movies.

Justice system, determination, human kind, inner self, law, higher pressure, right and wrong, conscience, poverty, power, motive, evidence

Justice and injustice, innocent, society, sadden, powerless, care, love, powerful, law, legal, fighting, truth, court, cell, survivors, past, mistake,

Prosecutor seeking justice. Fighting political corruption. Long battle with failing justice system. Bromance. Heartwarming movie

Both movie involve the prosecutor trying to find the truth. Complicated story. Prosecutor self struggle and trying to break a case and involve years long battle

Both show the gritty side of The Republic of South Korea as it developed. Though, The King takes place 20 years later when transitioning from a dictatorship to a democracy took place. Corruption plagued both eras.

If you liked watching 'Seoul Vibe' you may also try watching 'The King'. Both of these movies have corruption, politics, prosecuters. Although Seoul Vibe is more on the colourful side, but The King is more about a darker theme. Nonetheless you might give it a try watching 'The King' if you like retro style movies with little bit comedy.
Hope you enjoy!