There are two sides to a coin: head and tail.
Life is just the same: two sides.
Luck doesn't have the chance to be lucky. Born in the middle, he belongs to neither Ignis nor Aqua, the only two kingdoms left on the planet. There aren't many options for him, other than assent to whichever kingdom is stronger.
There were a king with a fatuous mind, and a queen with a guileful tongue, on the throne of Ignis; there were a king with a fatuous mind, and a queen with a passive tongue, on the throne of Aqua. It was clear to the public eyes that the tale of these two kingdoms is not as friendly as one would expect from a fairy tale.