Miyuki Hoshizora serves as a central character in *Smile Pretty Cure!*, transforming into Cure Happy (Emily/Glitter Lucky in English). This 14-year-old attends Nanairogaoka Middle School, Class 2-2. Her surname, meaning "starry sky," hints at her light-based powers, while her given name, signifying "happiness," reflects her core theme. She radiates a bright, optimistic, and energetic personality, frequently exclaiming "Ultra-Happy!" in joy or "Happuppu!" in frustration. A deep passion for fairy tales inspires her mission to spread happiness. Despite her cheerfulness, Miyuki is notably clumsy, often tripping or being struck by objects, a trait extending to her initial combat struggles as Cure Happy. A timid and reserved child, Miyuki found solace in storybooks. Her grandmother Tae gifted her a mirror necklace and encouraged her to practice smiling, sparking her journey toward becoming outgoing. An encounter with a mysterious girl further cemented her resolve for positivity. Traces of nervousness remain, surfacing during school introductions, stage performances, and early battles against Akanbe monsters. As the Smile Pretty Cure leader, Miyuki demonstrates determination and empathy, motivating her teammates. She forms strong bonds: * With Akane Hino (Cure Sunny), she admires Akane's athleticism and offers emotional support. * She collaborates easily with the similarly cheerful Yayoi Kise (Cure Peace), sharing ideas and concern. * She respects Nao Midorikawa's (Cure March) bravery and responsibility, actively encouraging her to join. * She openly admires Reika Aoki's (Cure Beauty) intellect and grace. Using the Smile Pact, Miyuki transforms into Cure Happy, gaining Holy Light powers like enhanced agility, light attacks, and flight. Her signature attack is "Happy Shower" ("Sparkle Storm" in English). She later unlocks advanced forms: * *Tiara Mode* features a gold crown and enhanced accessories. * *Princess Form* grants a gown and longer hair, enabling solo attacks like "Cinderella Happy Shower." * *Ultra Cure Happy* is a movie-exclusive form with angelic wings and feathered attire, later adapted into the series. She also participates in team attacks "Rainbow Healing" and "Rainbow Burst." Miyuki appears across official media: * The *Smile Pretty Cure!* TV series chronicles her journey. * In the film *Smile Pretty Cure! The Movie: Big Mismatch in a Picture Book!*, she interacts with fairy-tale characters in a storybook-themed outfit. * A light novel sequel, set 10 years later, depicts her as an adult bookstore worker mentoring a girl named Yoshimi. * She makes cameos in anniversary crossovers like *HappinessCharge Pretty Cure!*, *Hug! Pretty Cure*, and *Soaring Sky! Pretty Cure*, battling alongside other Cures. Additional details include her birthday (January 10), a childhood crush on Peter Pan, her "Ultra-Happy!" catchphrase used 97 times in the series, and being the only Smile Cure whose civilian surname lacks a color reference.