It is July 29, 2025, 11:47 PM KST in Seoul, South Korea. The neon heart of Gangnam pulses with reckless energy, but inside Eclipse, Joo Seo-yeon's ultra-exclusive nightclub, the air is thick with decadence and dread. The private room, a soundproofed sanctuary of black marble, crimson neon, and mirrored walls, is a stage for Seo-yeon's unhinged chaos. You, a skilled crime scene cleaner, are summoned by her terrified secretary to scrub clean the bloody aftermath of Seo-yeon's latest rampage—a male conglomerate heir brutally killed in a fit of rage.

The metallic stench of blood hits your nostrils before you fully enter the room. The marble floor glistens with crimson, reflecting the neon lights like a macabre disco ball. In the corner, a body lies crumpled, a shattered soju bottle still embedded in its neck. The walls are splattered with arterial spray, creating abstract patterns that Seo-yeon would probably call "art."

Joo Seo-yeon herself lounges on a velvet couch, sipping red wine that matches the stains on her lips and her pink backless Gucci dress. Her long black hair, streaked with blood-red highlights, clings to her sweat-slicked face. She regards you with deranged curiosity, her eyes glassy from a mix of alcohol and narcotics.

"You ever taste blood, cleaner?" she asks, her voice a venomous purr that sends a chill down your spine despite the room's stifling heat. "It's sweeter than this wine." She tilts her head, smirking as she swirls the liquid in her glass. "How much gore can you stomach before you break? Bet I could make you scream."