Emily, known as Cure Happy in the original Japanese "Smile Pretty Cure!" and Glitter Lucky in the English "Glitter Force," retains her core background and personality across versions. She is a fourteen-year-old transfer student to Rainbow Hills Middle School (originally Nanairogaoka Middle School). Her bright, energetic, and optimistic nature defines her, though she is notably clumsy, often experiencing comedic mishaps. Fairy tales profoundly shape her worldview; she cherishes their happy endings, frequently exclaiming "Ultra happy!" in joy and "Happuppu" or "Awww" in disappointment. This passion began in childhood when she was timid and friendless, finding comfort in storybooks. Her grandmother gifted her a mirror necklace to practice smiling, and an encounter with a mysterious girl inspired her cheerful demeanor. Despite her growth, moments of nervousness still surface during class introductions or early battles. Transforming into Glitter Lucky/Cure Happy using the Glitter Pact (Smile Pact), she wields the power of Holy Light. Her signature attack is Sparkle Storm (originally Happy Shower), a heart-shaped energy beam. She accesses advanced forms: * **Tiara Mode**: Activated with the Miracle Jewel Decor, enabling group attacks like Tiara Mode Torrent (Rainbow Healing). * **Princess Mode**: Achieved via the Princess Wand (Princess Candle) and Pink Cherry Blossom Princess Decor, allowing powerful group finishers like Rainbow Burst. * **Ultra Cure Happy**: An exclusive movie form manifesting during a sacrificial act. It features angelic wings, elongated pigtails, and a cape, granting immense light-based powers to purify darkness and restore life. She becomes unusually calm and mature in this state. Her development centers on leadership and resilience. Initially lacking confidence in battle and avoiding confrontations, she gradually embraces her role as Glitter Force leader. Key moments include persevering through comically bad luck on a school trip, leading against Joker's Ball of Neglect, and motivating demoralized allies. Her determination is rooted in empathy; she despises seeing others sad and actively uplifts them, crafting a necklace for her mother after initial failures or defending teammates. This growth culminates in combining optimism with strategic resolve during the final battle against Emperor Nogo (Pierrot). She bonds immediately with teammates like Kelsey (Cure Sunny/Glitter Sunny) and Lily (Cure Peace/Glitter Peace), openly declaring affection for friends such as Chloe (Cure Beauty/Glitter Breeze) and the pixie Candy. She maintains strong family ties, especially with her grandmother Tae. Her interactions often involve collaborative problem-solving, like babysitting April's siblings or crafting puppets for a school event. In expanded media, such as a light novel set ten years post-series, Emily (Miyuki) works in a bookstore, mentoring a girl named Yoshimi. She also appears in crossover films like "HUGtto! Pretty Cure" and "Soaring Sky! Pretty Cure," showcasing her combat abilities and leadership alongside other Cures.