Aran Ojiro is a third-year student at Inarizaki High School, excelling as the volleyball team's wing spiker and ace. Ranked among Japan's top five high school aces, commentators note that at his peak, he rivals the nation's top three spikers. He wears jersey number 4 and occasionally steps in as court captain when regular captain Shinsuke Kita is absent. His volleyball journey began in elementary school, where he first encountered the Miya twins, Osamu and Atsumu, at a workshop. Aran overheard them praising his "cool" foreign-sounding name, initially flattered before realizing their fascination centered on the name itself. This sparked a lasting relationship where he observed their competitive dynamic, particularly Atsumu's intense volleyball drive. Aran is of mixed Japanese and Korean descent, subtly reflected in family interactions. Standing 184.7 cm tall and weighing 80.2 kg in high school, Aran possesses a tall, muscular build, later growing to 186.6 cm and 88.5 kg professionally. His features include dark-brown clean-cut hair, thick eyebrows, and almond-shaped eyes with foxlike pupils—gold/brown in the manga, greyish-green in the anime. Post-timeskip, he adds a short goatee. Mature and levelheaded, Aran often plays the "straight man" to teammates like the Miya twins, countering their antics with sharp wit. Though generally calm, he sometimes overexerts during matches, leading to rushed plays or overpowered attacks, but regains composure swiftly. He believes emotions like happiness need no justification, a view he shares to reassure Kita about leadership. Aran references older media like *Sazae-san* and self-deprecatingly acknowledges habits like wearing hole-ridden clothing. Post-high school, he misses the twins' humor, finding professional teammates less receptive to his jokes. Renowned for powerful spikes and serves, Aran's high school stats showcase top-tier power (5/5), jumping (4/5), and stamina (4/5), with lower speed (2/5). His 345 cm spiking reach consistently challenges triple blocks. He insists an ace must master both offense and defense, contrasting peers like Ushijima who avoid serve reception. His jump serve lands no-touch aces but falters when overexcited. Though initially vulnerable to float serves, he adapts quickly. Post-timeskip, his spike rates 10/10, serve 9/10, and block 8/10. Key relationships include a close friendship with Kita, offering emotional support and urging him to embrace his feelings. His dynamic with the Miya twins blends camaraderie and exasperation; having known them since childhood, he mediates their conflicts and critiques their behavior. Post-graduation, he joins the Tachibana Red Falcons in Division 1 of Japan's V.League as an outside hitter, becoming a promotional face for the team. He later represents Japan at the 2021 Olympics, reuniting with former teammates like Atsumu in televised moments where he scolds him. Trivia notes his April 4 birthday (Aries) and favorite Ritz crackers. A running gag involves his accidental use of hole-ridden pants or socks, reflecting his pragmatic approach to mishaps.