Reika Aoki is a 14-year-old student and vice president of the student council at Nanairogaoka Middle School. She participates in both the archery and art clubs, cultivating a reputation for academic excellence and responsibility. Her appearance features dark blue eyes and matching chest-length hair styled in a traditional hime cut, often accented with light blue hair pins. Casual attire includes an ankle-length pale blue dress with cerulean trimming, a navy bodice, and a pale indigo jacket worn over it, paired with short pale blue boots. A summer variant consists of a light blue dress with puffy sleeves and a sailor collar. For sports activities, she ties her hair into a high ponytail. Her alter ego is Cure Beauty, known as Glitter Breeze in certain adaptations. Upon transformation, her hair shifts to vibrant light blue, growing to knee-length and styled with a short straightened segment plus four long sharp strands. Her bangs remain unchanged while curled sidelocks extend to chest-length, secured by gold clips. The Cure Beauty outfit presents a light cerulean dress with dark blue triangular scalloped trimming, a pleated skirt revealing a pearl blue petticoat, and short frilly sleeves. A white tiara with a dark blue orb and wing-shaped pieces complements round earrings and a dark blue downward-pointing choker. Footwear consists of knee-length white boots featuring light cerulean toes and dark blue ribbon accents. Personality traits include elegance, quietness, and a deep understanding of others. She demonstrates modesty and reluctance to inconvenience anyone, initially refusing assistance with school responsibilities or offers to join the Pretty Cure team. Calmness and patience define her demeanor, remaining composed during revelations about magical duties. She manages fear effectively, rarely showing distress even in perilous situations. Acceptance of her role as a protector is immediate and unquestioning. In battle, she exhibits intense focus and composure, efficiently defeating adversaries without visible exertion. An occasional preoccupation with finding her definitive "path" in life emerges, reflecting her serious approach to scholarly and guardian duties. When angered, her reactions become formidable. Relationships include a childhood friendship with Nao Midorikawa, characterized by comfort and informality; Nao drops honorifics and clings to her when frightened. With Miyuki Hoshizora, she forms a bond despite initial surprise at Miyuki's air-headed nature, appreciating her helpfulness. Akane Hino respects her deeply, praising her academic prowess and popularity. Yayoi Kise shares a mutual but less explored connection, with Reika admiring Yayoi's artistic talents. She maintains a professional friendship with the student council president, valuing his contributions. Her grandfather Soutarou named her using the kanji for "beautiful and elegant," shaping her upbringing; she frequently seeks his guidance during uncertainties. An older brother practices judo, her mother practices aikido, and her father works as an artist. Her background involves meeting Miyuki during a class presentation, where Akane introduced her as "Miss Popular." Later, Miyuki observed her watering school flowers, describing her as a "water fairy" due to her kindness. When invited to become a Pretty Cure, she declined politely, citing student council obligations. Miyuki discovered her organizing a storytelling event for elementary children and enlisted other Cures to assist. During the event, the villain Majorina attacked, creating a mirror-based adversary that cloned itself. After the initial Cures exhausted themselves against the clones, Reika intervened, transforming into Cure Beauty. She identified the real adversary through sharp deduction, destroyed it, and afterward accepted her role as a protector. Her abilities center on ice manipulation. Basic attacks include Beauty Blizzard (Sparkle Blizzard in adaptations), where she compresses snow from her Smile Pact into a combined snowflake-and-ice ball before releasing an icy beam. Upgrades include Beauty Blizzard Arrow (Sparkle Blizzard Arrow) and Thunder Blizzard, a combination attack with Cure Peace involving ice and lightning synergy. Group techniques encompass Rainbow Healing (Tiara Mode Torrent), Rainbow Burst, Royal Rainbow Burst, and Miracle Rainbow Burst, requiring coordinated transformations and items like the Princess Candle or Royal Clock. Defensively, she can summon large rainbow shields or barriers. Transformations beyond her base form include Tiara Mode, activated via a diamond-shaped charm to gain a gold crown and earrings for enhanced group attacks. Princess Mode (Princess Beauty) uses a snowflake-shaped charm and Princess Candle, lengthening her hair into wild spikes and adding a ruffled pearl blue overdress with a halo. Royal Mode (Ultra Cure Beauty) incorporates feathery capes, wing-adorned boots, and teleportation or flight capabilities. These forms amplify physical and magical prowess, enabling advanced techniques like Royal Rainbow Burst. Her name's etymology reflects her attributes: "Aoki" combines "blue" (青) and "wood/tree" (木), while "Reika" uses kanji meaning "beautiful and elegant" (麗華). Alternative readings connect to "sub-zero," aligning with her ice powers. Her Cure title, Beauty, references noble aesthetics often associated with fairy-tale princesses. Trivia notes include her status as the first ice-controlling Cure, a strand of hair frequently out of place despite her neat appearance, and a hinted romantic interest from the villain Wolfrun in one episode. She shares similarities with other blue-themed, intelligent magical girls like Cure Aqua and Sailor Mercury, including shared English voice acting in adaptations. A character song featured in episode 43 of her series.