Sumika Warakubami, operating under the stage name Kawaru Natari, belongs to the Hundred Devouring Families—a faction challenging Kirari Momobami’s leadership of the Momobami clan. Hailing from the Warakubami family, renowned for their influence in entertainment, she forged a celebrated Hollywood career, earning acclaim for her portrayal of a character with twenty-one dissociative identities in *Mistral* and a starring role in *The Gamble Hole*. Trained in U.S. drama schools from age twelve, she debuted onstage at thirteen and transitioned to screen acting by fourteen. At Hyakkaou Private Academy, she adopts a disheveled disguise: long, face-obscuring black hair, a medical mask, and a slouched silhouette that projects unsettling shadows. Her true visage contrasts sharply—dark maroon curls framing violet eyes, a beauty mark beneath the right one, and bold crimson lips. This duality underscores her skill in masking her identity while scrutinizing others unnoticed. Posing as a withdrawn, taciturn student, she meticulously analyzes peers and dominates poker games. Shedding her facade, she reveals sharp wit, strategic brilliance, and a commitment to fair play, disdaining deceit in gambling. Though openly critical of fame-driven individuals lacking substance—particularly idol Yumemi Yumemite—she admires tenacity. When Yumemi fractures her finger to uphold a bluff during a macaron-eating gamble, Sumika commends her resolve and later mentors her toward Hollywood acting. During the academy’s election, she faces Yumemi and Yumeko Jabami in an arts contest. She secures the first round with a haunting rendition of *Amazing Grace*, counters Yumemi’s rigged audience by deploying Rei Batsubami to eliminate bias, and narrowly loses the final round to Yumemi’s defiant comeback. Accepting defeat with dignity, she praises Yumemi’s evolution. Her bond with Erimi Mushibami traces to childhood, when she consoled Erimi after a humiliation. Prior to exiting the academy to prioritize acting, she entrusts Erimi with her electoral votes, cementing their loyalty. Her name, Sumika (淑光), signifies "graceful light," while Warakubami (和楽喰) blends harmony, music, and voracity. The alias Kawaru Natari localizes "Natalie" into Japanese, mirroring her Hollywood identity.