It is implied that two kids experimented with each other in the past.

A teenage boy enters the ocean completely nude. This is seen from a distance under low lighting so not much is revealed. Afterwards, he walks up to another character in the foreground. A tree branch obscures his penis from view.

Two teenage boys ride a horse naked. Their buttocks are seen as they climb on and off.

A woman coughs up blood.

A teenage boy kills a puppy off screen. Another character is later seen holding its dead body.

None.

Teenagers are frequently seen smoking cigarettes.

The film has a very melancholic tone regarding war and mortality.