"Sweetie" Bitter Sweet, an associate of the Gui Carlin syndicate, dons a long brown coat over maroon formalwear, switching to a dark red dress, white shirt, and hat to evade attention. Her demeanor oscillates between a charming, flirtatious facade and ruthless efficiency, prioritizing mission success through lethal measures like silencing witnesses. Obsessively hunting pages of the Black Fairy Tome—a relic tied to immense power—she first clashes with Cain Distarol, intercepts Free Underbar and Marlya Noel, and corners Axel Laboo after he steals a page, shooting him to thwart escape before retreating under Marlya’s counterattack.

She later enlists Patricia Pearl for covert operations, negotiates with Gilbert Warlock using her fairy Skriker’s retaliatory magic to turn attacks against aggressors, and allies temporarily with Dorothea agents Marlya and Klara Kysenaria to infiltrate Gilbert’s estate. After overwhelming his forces, she briefly claims the Tome before honoring a pact to abandon it. Partnering with Damien Carme and Veronica Thorn against Eajey Daven Thor ends in retreat due to his overwhelming strength. A strategic bargain with Free Underbar trades Gui Carlin intel for Dorothea’s neutrality, enabling her to exploit chaos in Mazria alongside Patricia during Dorothea’s operations.

Proficient in swords and firearms, she rivals veteran fairy soldiers, augmented by Skriker’s reflective defenses. Her photographic memory aids in情報 extraction and manipulation, while her father’s past fixation on the Tomes fuels her relentless pursuit. Though her origins remain undisclosed, she prioritizes securing the Tomes’ power, balancing mafia obligations with transient alliances when advantageous.