Ryunosuke Tanaka, a second-year wing spiker on Karasuno High’s volleyball team, sports a shaved head accentuated by a widow’s peak and piercing blue-grey eyes, an intimidating look belying his true nature. His lean, athletic frame evolves into a muscular build post-graduation as he becomes a personal trainer. Initially sporting short, fuzzy light hair in his first year, he shaves it off to embrace discipline and a renewed focus. Boisterous and hotheaded, Tanaka’s quick temper flares in confrontations, paired with a casual disregard for academics and punctuality. Yet his fierce loyalty shines through unwavering support for teammates, especially underclassmen facing disrespect. On the court, his explosive enthusiasm manifests in shirt-spinning celebrations after scoring points. His relentless romantic pursuit of team manager Kiyoko Shimizu begins with an impulsive proposal upon meeting her, eventually culminating in marriage after high school. Tanaka’s supportive streak emerges early, mentoring childhood friend Kanoka Amanai in volleyball despite her being bullied for her height. At Karasuno, his initial impulsiveness—like retaliating against slights toward the team—softens through observing captain Daichi’s leadership, channeling his intensity into disciplined teamwork. During matches, Tanaka’s mental fortitude shines; he withstands targeted strategies and repeated blocks, pushing through self-doubt to remain a tenacious presence. Though his technical skills—like a perfected jump serve and sharper spikes—improve by the Nationals arc, his game sense stays average. Teammates rely on his infectious energy and steadfast encouragement, cementing his role as the team’s emotional anchor. In the OVA "VS Failing Grades," Tanaka orchestrates study sessions for academically struggling first-years Hinata and Kageyama, enlisting his sister Saeko to drive them to a Tokyo training camp. His resourcefulness in navigating family negotiations underscores his dedication to the team’s success. Post-graduation, Tanaka transitions into a personal trainer while settling into married life with Kiyoko, retaining his vibrant spirit while embracing maturity. His evolution from a fiery underclassman to a dependable leader highlights his growth, resilience, and unwavering belief in camaraderie.