Ai Hinatsuru is a main character in the anime series 'Ryuuou no Oshigoto!'. She is a nine-year-old shogi prodigy who becomes the disciple of Yaichi Kuzuryuu, the youngest Ryuuou title-holder in history. Ai is highly determined and passionate about shogi, often displaying a cheerful and energetic personality. Her natural talent and tenacity in the game make her a formidable opponent despite her young age. Throughout the series, Ai's relationship with Yaichi grows, highlighting themes of mentorship, growth, and the challenges of balancing personal and professional aspirations.