Haru Urara draws direct inspiration from a real Japanese racehorse famed for competing in 113 races without a single win. She appears as a petite horse girl with rose-pink hair in a ponytail and bright pink eyes featuring distinctive cherry blossom petal patterns within her irises. Dark magenta ear caps cover her horse ears. Her standard racing outfit resembles a Japanese gym bloomer set, primarily light pink and magenta, including a track jacket, fingerless gloves, and pink-and-white striped socks. Multiple band-aids on her legs reference injuries sustained by her real-life counterpart. Her defining traits are relentless optimism and perseverance. Despite constant losses in races, she maintains an energetic, cheerful demeanor, finding inherent joy simply in running. She exhibits childlike qualities: distractibility during training, difficulty with complex kanji, and struggles pronouncing words like "funiki." She enjoys simple pleasures such as carrots (her phone wallpaper), her mother's carrot rice, and catching dragonflies barehanded. Her resilience is central, often expressed by her catchphrase: "Even if I lose and lose again, I won't give up! U~rarara♪" At Tracen Academy, she lives in Ritto Dormitory alongside her roommate King Halo, paired due to their shared "never give up" attitude despite poor results. She befriends many horse girls, including Special Week, whom she guides around campus upon arrival. Her friendship with Rice Shower highlights contrasting outlooks, with Haru Urara's positivity often countering Rice's pessimism. She also interacts warmly with local shopkeepers, assisting them and acting as a mood-maker. Across official media, her narrative emphasizes persistence over victory. In the anime's first season, she greets Special Week, participates in Team Rigel tryouts (finishing last), and brings souvenirs from Kochi. Her early manga portrayal in *Haru Urara Ganbaru!* (2016) depicts a more whimsical and stubborn character compared to later adaptations. In the mobile game, she is a low-rarity starter character ("★1"). Her training scenarios focus on gathering fan support through cheerfulness rather than winning, and her unique skill recovers stamina when trailing in races. While players can guide her to enter elite races like the Arima Kinen (grass), winning remains intentionally difficult, reflecting her underdog status. Her background mirrors the real horse's history: born unsold and unwanted, she was sent to the low-tier Kochi Racecourse facing closure, where her losing streak reached 80 races by 2003. Media coverage transformed her into a national symbol of resilience during economic stagnation, dubbed "the shining star of losers everywhere." Fans used betting tickets on her as good-luck charms (believing "ataranai" [not winning] could prevent accidents), and her popularity temporarily saved Kochi Racecourse financially. After retirement and uncertain ownership, she settled peacefully at Martha Farm in Chiba. This history informs her character's ethos: finding purpose beyond winning and inspiring others through unwavering effort.