Shingo Kinjō served as captain and ace of Sohoku High School's bicycle racing club, maintaining meticulous training journals spanning over 83 volumes. His leadership combined strategic race planning with granting teammates autonomy during execution. Nicknamed the "Snake of the Stone Path" for relentless pursuit tactics and the "Man Who Will Never Give Up" for perseverance, he executed precise high-speed maneuvers to assist teammates. His victories included the Chiba Prefecture Rookie Tournament and the 41st Inter High Qualifiers. During his first year, Kinjō formed Sohoku’s core racing team with Yusuke Makishima and Jin Tadokoro, securing victory at the Chiba Prefecture Newcomers' Tournament. He mentored first-year Sakamichi Onoda during the Welcome Race, providing tactical guidance and equipment support. At the 41st Summer Inter High, Kinjō’s rivalry with Hakone Academy’s Juichi Fukutomi culminated in a crash that injured Kinjō’s left knee, forcing his withdrawal on Day 3. Despite this, he maintained respectful acknowledgment of Fukutomi’s strength. Post-graduation, Kinjō enrolled at Yonan University to study biological sciences while joining its cycling club. He roomed with former Hakone rider Yasutomo Arakita and pursued a driver’s license to transport teammates’ gear, encouraging Arakita to do the same. Retaining his buzz-cut hairstyle ensured recognition by Makishima after the latter’s study abroad in England; Kinjō and Tadokoro greeted Makishima at the airport despite initial identification difficulties due to a flight delay. Kinjō exhibited consistent loyalty, thanking Makishima during a late-night training camp conversation. His leadership balanced high expectations with support, motivating Shunsuke Imaizumi after psychological tactics caused Imaizumi’s faltering. Personal habits included pre-bedtime exercises, sewing torn jerseys, collecting training journals, and enjoying yakisoba with green laver and meat drippings. Additional talents encompassed prestidigitation and chemistry proficiency.