Aori Kirisawa is a prominent supporting character within the world of Kirarin Revolution, recognized as a top-tier celebrity and idol. Her background is that of an established and highly successful performer, holding the prestigious title of Idol Queen for three consecutive years, a testament to her consistent excellence and dominance in the entertainment industry. Before the protagonist Kirari entered show business, Aori was her favorite idol, and after Kirari became a singer herself, she continued to admire Aori the most, setting her as a personal goal and ideal to strive towards. Aori is portrayed as being almost flawless in her public persona, never making mistakes, remaining gracious in victory without a trace of conceit, and always demonstrating excellent judgment and initiative.

Aori's personality is marked by politeness and consideration, especially towards her fans and fellow idols. She believes in treating idols and fans equally, acknowledging that they share common feelings, and offers wise advice to younger performers like Kirari. She is not obsessed with winning or losing, which contributes to her calm and dignified demeanor. Despite her immense success, she is not arrogant and instead serves as a generous senior figure who actively helps Kirari grow. She evaluates Kirari as a giant with the potential to become a star who will one day surpass even her, and genuinely enjoys working alongside her. Her role in the story is largely that of a mentor and an insurmountable goal for Kirari, pushing the protagonist to improve and find her own path in the competitive world of idols.

In terms of key relationships, Aori is close friends with Genguro Daimonji. She also has a significant and supportive dynamic with Kirari, whom she respects as a promising rival and protégé. Her interpersonal skills are strong, and she has a notable ability to imitate Genguro well. Throughout the series, Aori serves as a benchmark of ultimate success; she has never been shown to lose in any media confrontation and is considered one of the few characters who consistently remains undefeated, ignoring the usual "protagonist advantage". Her abilities as a performer are so refined that she can surprise others with her talents, such as when she made a special appearance for Aori and Kirari by impersonating Genguro.

Aori experiences a significant development late in the anime. In episode ninety-three, she decides to put an end to all her activities as a celebrity to concentrate solely on her life as a singer. Following this decision, her presence in the story diminishes sharply as she graduates from being an active idol. Her notable abilities include her impeccable performance skills, strategic thinking, and her capacity to maintain a flawless public image. She is a munchkin-like figure within the series' competitive landscape, having defeated nearly every major character, including the protagonist and other powerful rivals like SHIPS and Fubuki Todo. Aori is a female character with gray eyes and black hair, appearing as a teenager. Her name carries symbolic meaning, with "kiri" referring to fog or mist, "sawa" to a valley or swamp, and "aoi" to indigo or blue.