Among the Kirai, there's a metaphor: "their sun has risen."

At first glance, this may seem positive. Perhaps, they've achieved fame. Actually, it's the opposite.

See, the Kirai see life as a fog, so if your sun has risen, then your fog will dissipate, your life will end. So, for someone's sun to rise is much like how for us, someone's time is up: it's a way of saying that they have die or are dying.