Hitoka Yachi, a first-year Karasuno High student, begins as a manager trainee under third-year Kiyoko Shimizu. Her 149.7 cm frame, blonde ponytail accented with star-shaped pins, and timid disposition belie her developing resolve. Inheriting organizational precision from her graphic designer mother, she meticulously documents team strategies and tutors academically struggling players—notably Hinata and Kageyama—after their exam failures risk excluding them from a crucial Tokyo training camp. Fueled by an overactive imagination and social anxiety, she initially misinterprets peers’ intentions, mistaking Hinata’s position due to his height or suspecting Coach Ukai’s motives. As she bonds with the team, these misconceptions fade, replaced by candid admissions of her insecurities. Witnessing the club’s financial strain sparks her initiative to craft a promotional poster with her mother’s mentorship. The fundraiser’s success cements her commitment to the manager role, transitioning her from hesitant observer to decisive contributor. Her interactions with Hinata and Kageyama chart her rising confidence. She facilitates compromises during their clashes over volleyball tactics and aids Kageyama in adjusting his sets during practice, fostering their reconciliation. Observing their relentless dedication, she acknowledges her role in documenting their progress. After graduation, she pursues higher education and joins a Tokyo-based advertising firm, maintaining her creative trajectory. Documented narratives trace her evolution from self-doubt to quiet agency. Reluctant to join the team initially, she later devises solutions to strengthen group dynamics, embodying themes of perseverance and self-acceptance. Once self-identifying as “Townsperson B,” she redefines herself through steadfast support of her teammates, channeling artistic skills into collective success while navigating her own incremental growth.