This will be put next to "My name".
Kim So-Jin did an excellent job portraying Choi Mi-Ryeo and Lee Joon-Hyuk portrayed Cho Kang Ok. Their talent is brilliant.
I fell in love with Joo Hyuk Nam in "25,21", where he did an amazing job. In this role, where Kim Ji-Yong was so different from Baek I-Jin, we could see how talented he could be.
And Yoo Ji-Tae as Cho He-on, GOD, brilliant.
The fight scenes were insane.

I'm going to leave my favorite lines from each episode here.
Ep. 1:
"I think it's because many criminals think they were caught because of the victims. It seems they blamed the victim, rationalize their behavior, and commit crimes again."
"There is a void in the law. It is often lenient to bad guys who don't deserve this. Now I'll fill that void. This is justice."
Ep. 2:
"Heavens's net. I'm sorry. Forgive." Tao Te Ching
"Don't worry. This isn't the age of Arsene Lupin. The evidence will turn up. And he'll get caught eventually. I guarantee it. People will forget about the Vigilante. I will make sure of it."
Ep. 3:
"The one who breaks the law better than anyone else is being protected by it. The one who obeyed the law better than anyone else wasn't protected in any way. So I thought about it. I think some crimes can be punished by crimes."
Ep. 4:
"If the Vigilante is caught and it turns out he's a steady and righteous person, with a good job and a good reputation, and if he's even young and good-looking, the public will go wild. Beyond our control."
Ep. 5:
The "battle" between The Vigilante and Cho Heon was amazing. There are so many good lines.
"People like you become monsters eventually."
"And that's why I feel sorry for you. [...] If you slightly change direction, you could become such a great police officer."
Ep. 6: "I don't care what the world calls me! Because this is my calling. The calling that's perfect for me, because I have nothing to lose! It to become a devil to kill other devils."
"Don't just talk about it and show me that the law won't let them have their way and will punish them! Show me your justice really exists!"
What a great fight, Mr. Cho Heon.
Ep. 7:
"To prove himself a man beat his head against a wall and tried."
Ep. 8:
"I'll be live what you're doing... is the right thing."
Ahh, this scene broke my heart.
"Unclench your fists. This is what you accomplished. You don't need to prove it. Because the proposition was a lie.[...] Let the law punish him.[...] I'll prove to you that despite its inconsistencies, the law ultimately does what's right."
That being said: SESON 2?!