After losing his job and drifting aimlessly through life, Meililai unexpectedly receives an invitation from Kal'tsit one day. He is offered a position as an enforcement officer who monitors threat levels and cracks down on Originium Arts crimes.
As a Pure Originium Monitor, tasked with suppressing high-risk Originium Arts and maintaining public order, he encounters his colleague, the runaway enforcer Surtr, on his very first day at work. Afterwards, the young woman claims that her mind was manipulated by a special form of Originium Arts.
After investigating with her friend Exusiai, Meililai discovers that Surtr's experiences are closely connected to a string of suicides among Infected people in the city. As they continue their investigation, the truth gradually comes into view.
