Shogo Itaya attends high school alongside Ritsuka Uenoyama and Ryu Ueki, sharing science classes with them. As a consistently supportive friend, he fosters an approachable and inclusive atmosphere, often organizing basketball games during lunch breaks. He extends this warmth by inviting Mafuyu Sato to play and praising his skills afterward. Physically, Shogo sports short, messy orange hair with thin eyebrows and matching orange eyes. His typical attire includes a raised-collar black jacket featuring orange buttons, layered over a dark yellow shirt. For sports, he switches to athletic wear like a red-collared jacket over a white shirt. He stands 176 cm tall, born on May 20 (Taurus, blood type O). Energetic and outgoing, Shogo initiates games and social interactions, displaying perceptiveness and encouragement in groups while accepting others' circumstances without judgment. Academically, he follows the science track with Ritsuka and Mafuyu. Athletically, Shogo excels as a forward on the school soccer team, earning regional recognition in Kanto as a top striker and attracting pre-graduation interest from professional clubs. He also demonstrates skill in basketball and other ball games, frequently arranging casual matches during breaks. Within school life, he observes Ritsuka’s interactions, noting his early closeness with Mafuyu. Shogo engages in lighthearted exchanges, joking about Ritsuka’s surprise at his soccer achievements. Though not in the central band, he attends their performances, reflecting his appreciation for music alongside athletics. His background centers solely on high school experiences, with no expanded evolution across adaptations. His role consistently emphasizes camaraderie and light comedic moments.