Emil lost his parents during the events of the Bloody Purge incident in Palmacosta. He is an honest, but somewhat naive young man. He is naturally somewhat of a coward, so he hesitates to make a decision.

One day, he hears the cry of a monster in the distance. Feeling like it's calling him, he leaves Palmacosta to investigate. Then he meets Marta, and she says she seems to know him, but he can't recall ever meeting her before. She tells Emil she is being hunted, and they agree to fight together.

He soon finds out he was summoned by Tenebrae, which was the origin of the voice he had heard earlier. He makes a deal with Tenebrae to become a Knight of Ratatosk, which enables him to use the summon spirit Ratatosk's power during battle. Due to this power, when he fights in battle, his eyes turn red and his personality changes into that of a cruel fighter. It is because of this that someone see him as a monster.