Shunsuke Hongō coached volleyball at Fujimi Academy, initially enforcing rigorous "Spartan-like" training methods viewed as callous or harsh. His approach featured physically demanding drills, including repeatedly hitting exhausted players with volleyballs to build resilience, embodying a "Drill Sergeant Nasty" persona. Despite this exterior, he genuinely cared about the athletes' development, evolving into a "Team Dad" figure who fostered team unity and individual growth.

His coaching philosophy stressed relentless repetition and mental fortitude ("Konjo"), believing perseverance through adversity would yield success and innovative strategies. This methodology led him to create specialized techniques, such as the "rotating bump," designed to overcome physical disadvantages against international opponents. His background included a university friendship with Inokuma Daigo, where Hongō played baseball while Inokuma focused on volleyball.

Hongō's relationship with Kozue Ayuhara was central; he recognized her potential early and subjected her to particularly intense training to hone her skills. Their dynamic exemplified "Tough Love"—his harshness stemmed from a commitment to preparing players for high-stakes competitions, though his methods softened over time as he gained trust. His interactions extended to other team members, including Midori Hayakawa and later high school players like Miyuki Ōnuma, whom he guided through conflicts and personal challenges.

Across the series, Hongō's character demonstrated development, transitioning from a strict disciplinarian to a more supportive mentor. This shift was evident in his handling of team crises, such as reconciling rivalries or adapting strategies during matches. His role remained consistent in spin-offs and adaptations, including the 2005 live-action drama, where he continued to embody the "hard coach" archetype rooted in Japan's post-1964 sports culture.