I have watched many KDramas and corruption is always there,either as a main or as sub/side story.
So this one is a pure corruption/revenge Drama but it is mild and light compared to others without this meaning is less interesting.So it was easier to watch and follow as well,without many characters involved to confuse the viewers.

A simple story where good guys fight against bad guys to eliminate corruption,to defend justice,to leave a great legacy behind.
Typical,right?Well not exactly..Why?Because our main lead is not the good guy.Is an antihero disguised as a hero and/or Vice Versa!
Actually he is a Villain ,working for the bad guys,he is cold and manipulative,very ambitious,climbing the hierarchy really fast.And nothing can stop him until one day he finds out he has a terminal illness with only 3 months left to live.
And as expected that was the turning point.The day he decided to go against his corrupted boss to reveal the truth about all his dirty deeds to bring justice to all his victims.

What i really liked about this character was the fact that even when he decided to switch sides and help the good guys,he didn't really change himself.And i applaud the writer for not altering the character for the sake of his illness.
To start with,our main lead was never evil.Bad guy,yes,devilish,no!
So he continued doing what he knew best.Scheming and plotting and setting traps all the way.He knew to achieve his goals the best way was to apply everything he already knew because wearing a Halo and holding a cross wouldn't do much.

Talking about Halos.The ex-current wife is a pure Angel!Never strayed from her path,always righteous and faithful to Justice.
So our main couple work together against everyone else.They have their differences and arguments but their relationship was really sweet and heartwarming.No, do not expect Romance here.But you can clearly see the love between them.Is the Love between 2 people who always and forever will be connected by their child!

Continue with characters...The main male antagonist is a clown!Period!He is the most silly stupid villain ever.During the whole Drama he had only one shining moment.I have many doubts about his IQ and everything he achieved was only because of others.And the really sad truth is that this applies to real life too.Worthless people in high positions..Anyway.

The Villain's right hand did his job right and although many times reminded me of a child seeking his daddy's attention he was a decent bad guy!

Minister of Justice is a bitch!End of story.I was sick and tired watch her saying that everything she does is for the greater good and that she has to sin in order to change the world.Yadda-yadda.No she was evil and selfish,willing to sacrifice her own son to save her sorry ass!No Sympathy for the Devil!Lol.

Minister's right hand to me was the most disgusting character of this Drama.Behind his pretty and innocent face was a sleazy man,betraying his friends,with no morals and ethics.

Obviously all the actors did an amazing job as every character brought to life the best way.

Story gets an 8 from me (i was hesitant whether to give 7 or 8.a big difference to me)
At first episodes i was rolling my eyes every 5 minutes.Poisonous Arrows flying back and forth,backstabbings,and the amount of schemings and twists was insanely ridiculous.Iam not a lawyer but i can tell i spotted many unrealistic details regarding the Justice System and the procedures they had to follow.I didn't know to get signatures to elect ministers,high ministers high ranked prosecutors etc is a matter of hours or days at its best!Lol.

Anyhow,few episodes later i really started to enjoy all this madness,to ignore the lame details and to let myself having some real fun.I was too curious to see what plans the ML had, which traps he set and how the bad guys responded to all this.It was like i was watching a ping pong game!Entertaining!

So,if you like Revenge/Corruption Dramas,easy to watch without heavy plot,watch Punch.
It has nice story and interesting characters.
And although i already knew even before i start watching it that the good guys will eventually win over the bad guys and no miracles happened,i still enjoyed it alot.