Notes.

Once upon a time, the worlds were kept together by light.

It was an era called the "age of fairy tales". The people cheered for the presence of light and basked in its purity. All of them had light in their hearts that they nurtured and took care of.

Daybreak Town.
Legends say that it was where light originated.
Or perhaps, they meant it was where the strongest lights gathered?
Riviera, a young boy from the town, wakes up from a weird dream that involves his destiny and finds himself ensnared in a chain of events that involves a grand battle between light and darkness.

Before the creation of the five unions that kept the light safe, there was an unrecorded journey of one boy who fought for it.

"May our hearts―
be our guiding key."