None.

Two male characters are seen showering together. Nothing is shown.

Infrequent scenes of bloody violence.

A man is shot in the shoulder (blood spurts). Immediately after, a main character is shot several times in the chest and once in the wrist. Blood pours from his mouth and from his wounds. He later catches fire and burns to death, largely off-screen. This is by far the most graphic scene in the series.

Two characters engage in a lengthy fist-fight. One is brutally beaten, and blood runs from his nose and mouth. He then dies of a heart attack, which is quite shocking.

Many scenes of people dying from heart attacks, which are not particularly graphic.

Infrequent use of mild profanities.

Several uses of "damn", "shit", "hell", "ass", and at least one use of "asshole" as an insult.

None, aside from the mention of criminals selling drugs.

The series is overall very intense, but not too graphic with the exceptions of the scenes listed in Violence & Gore.

The shinigami Ryuk has a very frightening appearance.