Claudine Saijō, ranked second in Seisho Music Academy's 99th Actor Training class, is a Tokyo native born to a Japanese father and French mother. Her professional acting career began in childhood, spanning plays, films, advertisements, and television commercials. This early success established her reputation as a prodigy and ingrained a belief in her exceptionalism, a conviction fundamentally challenged upon entering Seisho. A junior high audition introduced Claudine to Maya Tendo, a rival whose innate talent and rigorous training eclipsed her own accomplishments. This encounter ignited a fierce, enduring rivalry, driving Claudine to dedicate herself to surpassing Maya through relentless effort. Her primary ambition became claiming the position of "top star," compelling her to measure herself against Maya constantly, often facing frustration when Maya effortlessly met her challenges. Claudine exhibits notable confidence and openly displays her competitive nature. She maintains a frank, honest demeanor, readily addressing others' mistakes directly. Her emotional intelligence allows her to perceive underlying dynamics, such as recognizing when peers observe others despite outward appearances, and she supports interpersonal relationships among classmates. Determination forms Claudine's core. She firmly believes willpower is essential to achieve goals, a mindset helping her overcome self-doubt during creative challenges. While initially driven by a one-sided rivalry, her dynamic with Maya evolves significantly. Collaborative stage experiences and intense revue duets transform their relationship into a mutually acknowledged partnership grounded in deep respect. This shift culminates in Claudine prioritizing protecting Maya's standing, accepting blame for shared setbacks to preserve Maya's undefeated image. Maya publicly affirms their partnership, declaring in French that only with Claudine can she reach greater heights. Her revue performances mirror this evolution. Early introductions emphasize individual passion and freedom, while later duets with Maya increasingly frame their brilliance as interconnected. The film introduces a darker, more aggressive stage persona, rejecting celestial metaphors like "moonlight" or "starlight" in favor of expressing raw, explosive passion aimed directly at her rival. Her weapon in these combat revues is the longsword "Étincelle de Fierté". Following the resolution of her rivalry and her Seisho experiences, Claudine's goals shift. She plans to return to France after graduation to join a professional Paris theater company. Physically, Claudine has ash-blonde, wavy waist-length hair, typically worn down with a black headband, and deep magenta eyes. Her attire includes a Seisho uniform (gray jacket with dark gray trim, knife-pleated gray skirt, white button-up shirt, red ribbon tie, brown loafers, brown high socks), casual wear (light blue puff-sleeved blouse with deep V-neck and frills, high-waisted black capri pants, red shoes), dormitory attire (black short-sleeved hoodie with red accents, blue shorts), and an iconic revue costume (black jacket with silver piping, stand collar with silver tassels, silver-buttoned frogs, black cuff flaps with silver trim, white button-up shirt with armband and epaulette, golden belt with silver buckle and silver aiguillettes, black kick-pleated skirt with white hem band and black ribbon, light gray tulle tail, black boots with golden trim and tassels, red pelisse jacket with golden piping worn over her left shoulder). She enjoys sashimi, film, theater, and training, while disliking pickled foods like umeboshi and Japanese horror stories.