Covered in ice and snow, Elior Forest is the home to dangerous magical beasts and 50 elves frozen in ice. One day, the great spirit Puck helps a young girl break out of her ice prison. Her name is Emilia, a half-elf born with silver hair, long ears, and amethyst eyes—features that resemble the evil Witch who destroyed half the world long ago. 

Shunned by society because of her appearance, Emilia dwells in the forest with Puck as her sole companion and family. Burdened with a sin of destruction she does not remember committing, she spends her days trying to find a way to help her frozen kin. But when the great spirit Melakuera, the Arbitrator of the world, finds Emilia, her right to stay alive is brought into question. Will the bonds of ice she formed with Puck prove to be the warm thread that defies fate?

[Written by MAL Rewrite]

When the popular online game Yggdrasil is shut down, a lonely player named Momonga decides to stay logged in and take over this digital frontier.

Ten years after the Great War against the demon-beasts, the empire rules over the world and prosperity relies on the massive use of aer. Yuri Lowell and Flynn Scifo are two young men who have just enrolled the ranks of the prestigious Imperial Knights. One day, they are sent to the town of Ceazontania, where abnormal aer activity has reportedly caused the proliferation of horribly mutated beasts, with serious threat for the whole region. Meanwhile, the Knights Supreme Commander Alexei Denoia and the naive Princess Estellise are involved in a behind-the-curtains struggle for power in the capital. The situation in Ceazontania deteriorates as the garrison of Imperial Knights finds that they cannot expect any immediate support from the capital. Then, Niren Fedrok, commander of the Imperial Knights in Ceazontania, takes an unexpected decision that is going to change Yuri and Flynn's destiny forever. What are the secrets behind the extraordinary events that are happening around Yuri and Flynn? Will they be able to defend the innocent people of Ceazontania and stay true to their beliefs?