setting
IIB's setting is a very heavily Alternate Universe where Flames have been prevalent throughout most of civilization. The True Earthlings / Heavenly Beings granted the ability of Flames to humans long, long ago, and myths and legends have sprung up in their wake. Basically, the concept of 'Flames' and 'True Earthlings' is used as a sort of zeitgeist for all the similarities between cultures (winged beings, reverence of fire and certain parts of nature, quest for immortality, etc).
Their purpose, unknown to most, was to use the humans' Flames to aid in powering the Trinisette by spreading the stones out through the world, in Holy Places and places of reverence and worship. A collective 'witchhunt' throughout the ages would cut down drastically on both Flame-active humans as well as the True Earthlings themselves, as they had to expend more or their own Flames to cover the massive decrease in Flame-active humans.
As a result, the Arcobaleno system was born. And then the Vongola rings. And then the Mare.
And now, an Island.
Their purpose, unknown to most, was to use the humans' Flames to aid in powering the Trinisette by spreading the stones out through the world, in Holy Places and places of reverence and worship. A collective 'witchhunt' throughout the ages would cut down drastically on both Flame-active humans as well as the True Earthlings themselves, as they had to expend more or their own Flames to cover the massive decrease in Flame-active humans.
As a result, the Arcobaleno system was born. And then the Vongola rings. And then the Mare.
And now, an Island.