Sometime after the Battle Royale started, either Kitano or Noriko (not entirely sure) have a dream. They are both walking casually by a river, eating popsicles, and talking to each other. We do not hear what is being said.
Is this a dream or a flashback of some sort? And what does it mean?
It appears to set up their relationship in the film. I haven't watched the film in a very long while, so I looked at the Wikipedia article that lists and explains the characters and their relationships, and it appears to confirm it.
It is most likely a flashback seeing as their relationship exists in the film and is not just a fantasy.
