Koshi Sugawara

Koshi Sugawara is a third-year setter and vice-captain of Karasuno High's volleyball team in Haikyu!! Although Tobio Kageyama becomes the starting setter, Sugawara supports the team and contributes as a strategic substitute.

Koshi Sugawara's loyalties and development in Haikyu

He is cheerful, emotionally perceptive, competitive, and willing to place the team's growth above personal status. Sugawara uses steady setting, strong communication, serving, and knowledge of his teammates to change match rhythm.

Koshi Sugawara's defining relationships and loyalties

His friendship with Daichi and Asahi gives Karasuno experienced leadership, while his acceptance of Kageyama prevents destructive rivalry. Sugawara remains active rather than passive, proving that a substitute can influence both morale and tactics.