Loki

Loki is Nakaba's servant. He is half animal and half human. He hates Caesar, and is plotting to assassinate him. He asks Nakaba to go along with it, but she is unsure. He frequently rescues Nakaba from Caesar and cares for her a great deal. He is her personal servant and took care of her since she was young. It is revealed later that Loki is Nakaba's older brother. He also possesses the arcana of time and has been using it from the beginning of the story. Later in the series, Loki demands that Nakaba gives him Senan. Neither Caesar or Nakaba are willing to fight him, so Loki gets his wishes.