Nao Kamiya, a 17-year-old high school junior from Chiba, Japan, embodies the Cool category in her idol unit with a blend of sharp wit and quiet vulnerability. Standing at 154 cm with a lean 44 kg frame, her brown hair and crimson eyes contrast her boyish fashion choices. A left-handed AB blood type, her September 16th birthday marks her understated yet determined nature, mirrored in her 83-58-81 cm measurements. As part of Triad Primus alongside Rin Shibuya and Karen Hojo, Nao balances her tsundere exterior with unwavering loyalty, frequently shielding Karen from overexertion due to her fragile health. Initially reluctant when scouted as an idol, she gradually embraced the role to experiment with feminine expression, though her comfort remains in casual, tomboyish attire. Privately, Nao nurtures a fervent passion for anime, exchanging manga recommendations and episode analyses with fellow enthusiast Hina Araki. Though she once concealed this otaku identity out of embarrassment, gentle encouragement from Hina and her unit mates has slowly softened her secrecy. Her journey intertwines prickly retorts masking shyness, steadfast dedication to performances, and deepening bonds with Rin and Karen. Through idolhood, Nao navigates self-doubt and blossoming confidence, forging a path where guarded sincerity and playful teasing coexist.