Some mild innuendo.

One episode features a brief glimpse at a dirty magazine, only side-nudity is seen.

On rare occasion we see glimpses at corpses with some blood spilled.

Fantasy violence when the 'sky beasts' fight.

Two uses of 'shit' in the English dub, occasional use of 'damn', 'hell', and 'bastard'.

In the first episode we see two old men drink sake, one is referred to as having a hangover later on.