A kiss scene in episode 5.

A scene contains two characters on top of eachother in the car pretending to be making out to spy on a criminal, no actual kissing happens.

In a fight, Commissioner takes off his shirt. This scene is repeated in flashback.

In ep 2 Yoon Dong-ju is seen taking bath. Only back is seen.

Male leads are often seen changing shirts, back is exposed.

Commissioner is seen shirtless twice in a massage room.

Series is full of violent characters, brutally killing and hitting others.

Frequent use of sh*t, ass, f*k.