TV Special
Description
Keiji Akaashi played setter for the volleyball team at Mori Junior High School, where his teammates were skilled but lacked strong passion. He received a recommendation to Fukurōdani Academy and weighed it against Suzumeoka High School. Witnessing Kōtarō Bokuto's intensely passionate play in a high school match significantly influenced his decision to enroll at Fukurōdani. Upon joining the team, Bokuto immediately involved him in frequent spiking practices, praising his sets as the best he had ever received. While Akaashi didn't initially enroll with grand ambition, he later expressed gratitude for being part of the team.

He has short, messy black hair, blue eyes with thin pupils (occasionally depicted as green in official art), and slightly thick eyebrows. He typically maintains an emotionless or mildly exasperated expression, smiling occasionally in appropriate circumstances. He stands 182.3 cm tall and weighs 70.7 kg. During volleyball, he wears a navy T-shirt, a light aqua sports bib displaying the number 5 in black, white shorts, and white shoes with yellow details, usually without kneepads. In his school uniform, he wears a light grey blazer, a neatly tucked white dress shirt, black trousers, and a precisely knotted blue-and-white striped tie. Post-timeskip, his appearance remains largely unchanged except for slightly longer hair and the addition of glasses.

Calm and composed, Akaashi rarely displays a wide range of emotions and often appears reserved. He communicates bluntly, frequently calling out foolish behavior, particularly Bokuto's antics. Despite contrasting personalities, he maintains a close relationship with Bokuto. He interjects into conversations with witty remarks when necessary and exhibits politeness, potentially due to being younger than most teammates. He demonstrates a cheeky side, dubbing Kuroo "Pain-in-the-ass Kuroo-san" during a match. His analytical skills are prominent during matches, where he makes split-second decisions, such as assessing whether to set to Bokuto during emotional slumps within 0.5 seconds. He is not inherently stoic but selectively expressive. He experiences moments of vulnerability, notably during the match against Mujinazaka High, where self-imposed pressure as setter led to overthinking, necessitating him being benched to regain composure. During this break, he initially appeared calm before succumbing to stress and yelling into his hands. He is not fundamentally generous or perpetually put-together; he displays self-centered tendencies regarding personal goals and exhibits occasional impulsiveness in significant decisions. In relationships, he values low-maintenance bonds grounded in domestic comfort rather than overt romantic gestures.

As Fukurōdani Academy's vice-captain and setter during his second year, Akaashi coordinates the team's offensive strategies. His precise setting consistently enables Bokuto's powerful spikes. He acknowledges his technical limitations, stating his inability to replicate Kageyama Tobio's floating sets or the speed of the Karasuno duo's quick attack. His gameplay emphasizes tactical decisions over flashy techniques, such as executing a setter dump to regain the lead during a practice match against Karasuno. His ability parameters rate jump, stamina, intellect, technique, and speed at 4/5, with power at 3/5. His current concern is wanting his physical power level a bit higher.

During Tokyo training camps, Akaashi participated in practice matches and joined Bokuto and Kuroo in voluntary training sessions. He facilitated Tsukishima Kei's involvement in these sessions, explaining Bokuto's exhaustive practice demands. He later observed Hinata Shōyō's accidental block-out and supported Bokuto's subsequent offer to teach Hinata a new technique. In the Fukurōdani vs. Karasuno practice match, Akaashi reminded Bokuto that he taught Hinata the feint technique, inadvertently irritating his teammates. As Bokuto's frustration mounted, Akaashi calculated the risks of setting to him twice within 0.5 seconds—both attempts failed, leading to Bokuto's emotional withdrawal. Akaashi accommodated this by benching Bokuto temporarily while maintaining team cohesion. He later capitalized on Karasuno's shifted focus to set the match-winning spike to a revitalized Bokuto. During the Spring High Preliminary arc, he managed Bokuto's pre-match excitability and set crucial points during the Fukurōdani vs. Nekoma match. His tendency to overthink resurfaced dramatically during the Mujinazaka High match, where overwhelming pressure forced him off the court to mentally reset.

Akaashi's most significant relationship is with Bokuto, whom he supports through erratic mood swings during matches. He predicts Bokuto's emotional triggers and strategically minimizes gameplay disruptions. Their bond extends beyond volleyball, with Bokuto frequently involving him in activities and social outings. He interacts observantly with other players, advising Tsukishima during training camps and assisting Kageyama when choking during a barbecue. He maintains pragmatic interactions with teammates like Konoha and managers like Yukie, dismissing unnecessary motivational tactics for Bokuto.

By November 2018, Akaashi worked as an editor for a shōnen manga magazine at a major publishing house. This career choice contrasts with his original desire to join the literature department, indicating a pragmatic shift. His post-high school life retains elements of his high school personality—professionally composed but privately messy, with noted tendencies like procrastination and chaotic personal habits.