Karino Shuka, or Shuka Karino, emerges as a pivotal force in a lethal survival game, her trajectory forged by vengeance and transformation. A scion of wealth shattered by her parents’ assassination at the hands of Fuli—a player targeting her father’s game-related research—she unearthed the game’s existence through her father’s concealed phone but waited five years to act. Manipulated into joining by classmate Miho, Shuka swiftly turned the tables, executing Miho before hunting down her family’s killer.

Dubbed the "Undefeated Queen" after 49 consecutive victories in Roppongi’s arenas, her reign fractured upon facing Kaname Sudō, an unassuming rookie who outmaneuvered her. Defeat reshaped her philosophy; where raw power once dictated her path, she now embraced adaptability, mending ties with allies like Rein, whose composed pragmatism she’d previously scorned.

Her psychokinetic sigil, "Queen of Thorns," channels lethal precision through wires, chains, and—at a cost—her own hair. Custom retractable anchors and iron chains amplify her aerial agility, merging brutality with ingenuity. This fearless approach lets her clash evenly with elites like Liu Xuelan, countering the paralyzing "Killing Intent" technique through sheer indifference to mortality.

Kaname’s influence proves transformative. Sparing her life post-duel, he kindles an evolution from fascination to devotion, tempering her impulsivity. Yet her ferocity lingers: she gambles clan territory to earn his respect and maims a flirtatious student to deter threats.

Once a lone avenger, Shuka co-founds the Sunset Ravens, a clan enforcing consensual combat within their domain. This shift from solitary dominance to collective guardianship mirrors her internal struggle to harmonize lethal prowess with allegiance to allies. Side novels delve into her vendetta’s roots, enriching her drive to dismantle the game’s tyranny. Her journey—a blade honed by vengeance, then redirected toward unity—cements her as both weapon and shield in a rebellion against oppression.