One of the women is in a bathtub before she gets abducted, she's naked, but her shoulders are only visible.

In episode 3, A man found dead in pool, his buttocks are shown.

In the second episode a girl kissed a man all of a sudden I couldn't even blink, it happened in the club.

The antagonist is a very violent man who randomly beats up people in a very brutal way, it's very bloody.

The antagonist kills the protagonist's mother in a very brutal way, the aftermath is really bloody.

The protagonist kills the person who killed his mother.

The main protagonist fights criminals who slip through legal codes during the night, often subduing them in a very brutal and bloody way.

Two men are seen urinating on a window, Kim Ji Yong later beats them up.

Fake vigilantes emerge and also take down criminals in brutal ways as a group.

The show is extremely bloody and violent.

Some mentions of sexual assault.

Kim Ji Yong often uses the blood of his enemies to write a message on a wall.

Show is extremely brutal, filled with a lot of blood and violence, almost any form of harm is shown, with brutal beatings, stabbings, shootings, and body deformations.

Two men are tied up and eaten alive by pigs. The scene is quite graphic and gory.

A woman is abducted and the kidnapper pries her fingernails off.

Characters smashes other characters heads into tables and walls repeatedly.

Use of "bastard", "damn", "hell", "ass", and variations of those.

Mentions of drug trafficking and things of that sort.

Some scenes take place at a club, with drinking and smoking.

Show is extremely dark and intense, not allowed for kids.

The aftermath of the deaths are very gruesome and brutal, and can be quite disturbing.

Some of the deaths can be very emotional.