Aira Harune hails from Yokohama, Japan, ultimately settling in New York City. Born on September 3, 1997, she is 14-15 years old during *Pretty Rhythm: Aurora Dream* and 17-18 in *Dear My Future*. Her family consists of her father Hiroshi, mother Omi (a former Prism Stylist), younger brother Itsuki, and twin younger sisters Eru and Uru. Physically, Aira possesses red-orange hair and auburn/light red eyes. She stands 165 cm tall in her early teens, growing to 170 cm later. Her hairstyle evolves from shoulder-length with curly sections to a smoother, shorter cut framing her face, often tied in a ponytail for performances. Passionate about clothing coordination and able to "hear the voices of clothes," she favors girly, fashion-forward outfits off-stage. Initially clumsy, self-doubting, and unathletic, Aira contrasts with her inherent kindness, optimism, and deep empathy. She prioritizes others' needs, often neglecting her own boundaries. Discovered by Jun Takigawa after accidentally displaying Prism Jump potential, she is reluctantly thrust onto the stage with Rizumu Amamiya. Finding joy in Prism Shows despite insecurities, she forms the unit MARs with Rizumu and her idol, Mion Takamine. Her determination leads her to win the Prism Queen title by performing the legendary Aurora Rising Dream jump. Romantically drawn to Shou, a Prism Stone designer, their relationship deepens through mutual flirtation and a fireworks festival date, though their performer status delays commitment. In *Dear My Future*, designer Yun-su rivals Shou for her affections. This turmoil leaves her vulnerable to manipulation by Don Bonby, who brainwashes her using a Symphonia Stone. As "Dark Aira," she defects to Symphonia Company, but the combined efforts of PURETTY, MARs, and Shou's love restore her true self. In *Gekijō-ban PriPara Mi~nna Atsumare! Prism Tours*, Aira appears as a legendary Prism Star within the Saints unit, mentoring PriPara characters through the Prism Show World via four tour routes. The Lovely Dream Tour highlights her perseverance and features her performance of "Dream Goes On." The Perfect Star Tour showcases her top idol status with MARs' song "Que Sera." She later collaborates with Saints and PriPara idols to restore the collapsing Prism World using Prism Stones, succeeding by performing "Make It!". Her story concludes when Shou gifts her a ticket to New York during Rizumu's wedding. Following a clumsy airport reunion, they relocate together, officially becoming a couple while pursuing fashion design.