Burst operates as an intelligence officer within the Klondike Family, a Fourland mafia syndicate, working in the shadows to shield the organization’s interests while avoiding direct contact with most members. Her focus centers on safeguarding Tilt, a fellow Klondike executive, driven by a loyalty so absolute she risks deploying her X-Playing Card, the Ace of Hearts "Faceless." Through touch, she replicates others’ appearances and abilities, manipulating events covertly—such as reshaping Tilt’s identity to let him meet his brother undetected.

This devotion pushes her to exploit even the forbidden X-Hand ritual, merging multiple card powers at grave personal cost, all to carve a path toward a life free of the family’s crimes. Yet her hopes for escape remain ensnared in the escalating conflict over the X-Playing Cards’ dominion.

Her bond with Tilt, forged through years of mutual reliance within the Klondike hierarchy, fuels her strategic defiance of the family’s power structures. Though her past is shrouded, her calculated choices—balancing subterfuge with defiance—reveal a resolve to protect her allies at any cost. Caught between her quiet ambitions and the Klondikes’ hunger for control, she emerges as a pivotal force in the battle to determine the cards’—and the kingdom’s—fate.