Futaba Igarashi is the main protagonist in the anime series 'Senpai ga Uzai Kouhai no Hanashi'. She is a petite, spirited office worker who is often mistaken for a child due to her small stature. Futaba is determined to prove herself as a competent and reliable employee despite her size. Her relationship with her senior, Harumi Takeda, is central to the story, as she juggles feelings of admiration and annoyance towards him. The series humorously explores their dynamic and Futaba's growth both personally and professionally.