Yumemi Yumemite, a second-year Hyakkaou Private Academy student and Student Council Public Relations Head, balances her academic role with a part-time indie idol career. She possesses fair skin, long hair in light brown or pastel pink styled in twin ponytails secured by white bands, and striking blue eyes with star-patterned pupils. Her school uniform features a violet floral accessory, while her stage outfits showcase bold checks, vivid hues, and decorative bows. Driven by an obsession to win an Academy Award, Yumemi strategically crafts her idol persona as a gateway to Hollywood fame. She hones acting and vocal skills daily, engineers a meticulously cheerful public image, and weaponizes memorized fan details to cultivate obsessive followership. Behind her radiant stage persona lies contempt for admirers, whom she privately mocks as intellectually inferior and unworthy of her artistic vision. Her calculated trajectory faces disruption during gambling duels with classmates Yumeko Jabami and Mary Saotome. A pivotal idol-themed wager against Yumeko culminates in humiliation when Mary’s unexpected participation as an audience subject thwarts Yumemi’s birthday-guessing strategy. Though forced to acknowledge her manipulative tactics publicly, her fans’ unwavering loyalty sparks reluctant self-reflection. A transformative encounter with actress Kawaru Natari, scion of the Hundred Devouring Families, reshapes Yumemi’s ambitions. Initially challenging Kawaru as a rival to surpass, their acting-centered gamble pushes Yumemi to fracture her own finger for authentic pain portrayal. Conceding defeat, she begins valuing her idol identity and loyal manager Saori over cutthroat competition. Later schemes, including mobilizing fans for Student Council election votes and deploying theatrical intimidation against Mary Saotome during the Grand Unification gamble, underscore her enduring ambition despite strategic missteps. Notable details include disputed birth records (March 8 vs. December 3), viral idol videos exceeding three million views, and a discarded Kawaru-inspired hairstyle preceding her trademark twin tails. Her arc traces a gradual shift from ruthless self-promotion toward tempered ambition, retaining Hollywood dreams while cultivating genuine appreciation for her support network.