Koki Furihata, a first-year Seirin High basketball recruit, forms the freshman trio with Kouichi Kawahara and Hiroshi Fukuda. Spurred by a challenge from a girl he admired to become "number one" in his chosen field, he joins the team despite grappling with self-doubt. Standing at 170 cm with tousled brown hair, his timid presence is marked by a nervous streak, particularly when facing intimidating opponents like Seijūrō Akashi, whose mere presence triggers his fight-or-flight instincts. Early matches expose his defeatist tendencies, often openly questioning his team’s prospects mid-game. Gradually, he transforms into a tactically-minded point guard, leveraging methodical tempo control and precision passing to orchestrate Seirin’s strategic shifts. His calculated screen plays and clutch decisions prove pivotal during the Winter Cup semi-finals against Kaijō and the finals against Rakuzan, where he clashes against high-profile opponents like Kasamatsu and Akashi, channeling anxiety into focused defensive efforts. Offense, he tracks subtle shifts in teammates’ dynamics, notably detecting shifts in Kuroko’s mentality during pivotal moments. Off-court, he emerges as an organizer among first-years, diffusing tensions and reinforcing team unity through steady encouragement. Despite limited playtime, he champions the importance of bench roles, assuring peers like Kawahara that their support fuels the team’s backbone. Outside basketball, he shares a quiet camaraderie with Kuroko on the library committee and indulges in trainspotting during downtime. His family life includes parents and an older brother, though his most memorable interactions involve the Generation of Miracles—particularly a comedic yet genuine terror of Akashi, showcased when the latter’s sudden arrival at a Christmas party triggers his instinctive panic.