Lullaby for the Broken

Humans always manage to break the Circles that all creatures must adhere to. Yusei, and a few others, born from those broken circles and called the Broken, are trying to figure out why, and put a stop to humanity's destructive ways before they destroy the world. They each have powers drawn from the circles they were born from, and aren't afraid to cause their own destruction to stop the humans. Will they stop the humans, only to have destroyed the world themselves, will they fail to stop the humans, or will they succeed in their mission? There are so many possible outcomes...