Of Light and Dark RoTG oneshots

Two spirits each with their own stories. One of Light. One of Dark.
Both manage to change the world they live in. As time goes by they manage to influence the minds of all those around them. But with happiness there is sadness and pain. They both learn that sometimes the world is not as nice as it seems and sometimes there is goodness even in the darkest of corners.

Companion book to fanfiction.net story and Archive of Our Own story..
Of Fire and Ice by HTTYDGuardian

Rated T for violence