Ai Kohda is a high school student in Yanagihara city, known for her vibrant nightlife in the entertainment district where she cultivates extensive local connections. She stands 1.64 meters tall with blonde hair, brown eyes, and a 78-58-84 cm figure. Her friendships with the Yanagihara Flame Birds gang are strengthened through childhood ally Kazuma Morisato.

Confident and outgoing, Ai engages others directly with her lively, cheerful demeanor, prioritizing personal enjoyment. Yet she harbors deep insecurity about her breast size, routinely using bra inserts to enhance her décolletage—a source of significant embarrassment.

Romantically, Ai pursues Hayato Narita ("Dora") with fervent dedication. This pursuit introduces her to Naru Ohtori, Kakeru Ohtori's younger sister. Though previously school acquaintances, their shared interest in Hayato forges a close friendship laced with underlying romantic rivalry.

Across visual novels and anime adaptations, Ai functions as a sub-heroine who bridges central characters and provides comic relief through her romantic escapades and nightlife interactions. She appears in supplementary media like the prequel "Oretachi ni Tsubasa wa nai ~Prelude~" and fandisc "AfterStory," maintaining consistent character development without major arcs or background expansions.