Ai Miyashita is a second-year Nijigasaki High School student and a member of the school idol club, performing in the subunit DiverDiva. Her image color is ultra orange (#ff5800), matching her performance penlight. Standing 163 cm (5'4") tall with a slim, athletic build, she has light blonde hair usually styled in a ponytail and orange eyes. Her parents run a restaurant, leaving them often busy with work, so Ai was primarily raised by her grandmother. This close bond fostered Ai's appreciation for traditional foods like her grandmother's fermented pickles (nukazuke), a favorite alongside candy. She also formed a childhood friendship with neighbor Misato Kawamoto, viewing her as an older sister. Misato's frequent childhood illnesses led Ai to tell jokes and puns to cheer her up, establishing Ai's lasting habit of using wordplay. Ai possesses a highly sociable, empathetic, and supportive nature. She speaks casually, frequently employs slang, and enthusiastically uses puns—often finding them funny herself even when others don't. Despite a gyaru-inspired fashion sense suggesting rebelliousness, she maintains excellent grades and excels in sports, participating as a substitute member in various school clubs. This versatility and approachability earn her a wide circle of friends across different groups. Inherently helpful, she readily engages with strangers, refers to neighbors as "siblings," and shows particular attentiveness to friends like Rina Tennoji, whom she calls "Rina-rii," and Misato. Her selflessness includes offering emotional support and practical help, like carrying extra candy to share. Her energetic, occasionally loud demeanor acts as a mood-maker within the idol group, balanced by levelheadedness and organizational skills. Despite her popularity and flawless school reputation, she remains unaware of this status and behaves authentically. Ai joined the school idol club after a classmate challenged her to explore the "unseen landscapes" of the idol world, appealing to her tendency to embrace new experiences. Her goal is to become a top school idol, driven by a desire to inspire others and make her grandmother proud. Extracurricularly, she collaborates with Ayumu Uehara and Rina Tennoji at Famitsu App, contributing to article research and video content; insights from this role inform her idol activities. Within the club, her nurturing side emerges, guiding Kasumi Nakasu through challenges and planning casual outings like shopping trips and pancake meals with Rina. Her grandmother instilled a sense of politeness, prompting Ai to switch to formal speech (keigo) with superiors, though she typically defaults to casual language. Her development emphasizes growing dedication to conveying genuine emotions through idol performances to deeply connect with audiences and fellow members.