Several men have sex with a prostitute in the first episode. While this is obvious, nothing explicit is shown, it generally shows the men walking away from her while putting on belts.

Women's breasts/torsos are shown several times throughout the show with just the nipples covered. Also, a man who acts as a gigolo is seen in bed with woman who has no shirt on. The nipples are barely covered in these scenes.

There're sexual posters in the main characters' apartment.

There are scenes of gun and sword violence with blood. Additionally, there are fist fights and two scenes where a woman is beaten - one resulting in her having a bloody face.

Fuck is often used in every single episode in this show

In the English dubbed version, profanities used are bitch, ass, asshole, shit, dick.

Smoking and drinking are prevalent throughout the series.