Fūga Saitō is a first-year Doshisha University student and a forward on the university rugby team, specifically playing left prop while wearing jersey number 1.

He possesses a heavy-set build, a round face, short and messy black hair, and brown eyes.

Cheerful by nature, Fūga holds a strong admiration for Natsusa Yuzuki that fuels his motivation. He voices concern when Natsusa returns to school after an absence, questioning if it's too soon. Learning Natsusa would be joining as a fellow first-year excites Fūga, who pledges his full support. When Natsusa notices Fūga sweating heavily and suggests he wipe it off, Fūga apologizes and uses a towel. Later, after Natsusa announces his role as a team manager, Fūga inquires about specific duties like washing uniforms, assisting with stretching, and timekeeping. Natsusa's confirmation of these tasks significantly boosts Fūga's enthusiasm and motivation.

His given name "Fūga" combines the characters for "wind, breeze, way, manner" (風) and "elegant, graceful" (雅). His surname "Saitou" means "adjusted, alike, equal" (斉) and "wisteria" (藤).