Sō Akama is a second-year student at Nohebi Academy and serves as the libero for the school's boys' volleyball team. He sports a brown buzz cut and long eyebrows, standing at 1.72 meters tall and weighing 63 kilograms, making him the shortest team member. Akama wears the Nohebi libero uniform: green shorts and a white jersey featuring yellow and green accents, displaying the number 8. Teammate Rintarō Numai describes Akama's personality as "too nice." He frequently attempts to de-escalate tensions among teammates during volatile situations, such as when opponents accuse Nohebi of cheating after a loss. In one instance, he劝阻 Numai from confronting frustrated opponents, reasoning they were simply upset about defeat. While Akama follows his teammates' lead in gamesmanship tactics—like blocking the referee's line of sight or yelling "out" on close calls during a Nekoma match alongside Numai—he does not actively participate in taunting opponents. During matches, Akama demonstrates decent defensive skills as libero, successfully receiving a blocked ball from Lev Haiba in one play against Nekoma, though the point still went to Nekoma. His abilities reflect above-average power, stamina, and speed (each rated 4/5), but lower game sense and technique (each rated 2/5). He admires his senior teammates, notably displaying a look of confident admiration toward Numai following a motivational speech. In the "Land vs. Air" OVA covering the Tokyo Representative Playoffs at Sumida City Gymnasium, Akama is present with Nohebi during interactions with Nekoma. He observes the exchange between captain Suguru Daishō and Nekoma's players without verbal engagement, maintaining his established supportive but non-confrontational role. Following Nohebi's playoff loss, he watches fearfully as third-years jokingly attack Daishō, reinforcing his tendency to avoid direct involvement in team conflicts despite concern. Akama shares his class level with teammate Akihiko Seguro and is the oldest second-year on the team. His name, like other Nohebi characters, potentially derives from a snake species such as "akamata" or "akamamushi." The kanji for his given name "Sō" (颯) means "sudden sound of the wind," while his surname "Akama" (赤間) translates to "red interval" or "red space."