Tōichirō Izumida, a first-year Tukushiba University bicycle racer and former Hakone Academy captain, channels his athletic prowess through a sculpted physique honed for Inter-High dominance. His regimen birthed personified muscles: Andy (right pectoral), compressing lungs for explosive sprints; Frank (left pectoral), sensing threats and accelerating circulation; and Fabian (lower back/obliques), enabling the Full-Muscle Sprint perfected in his third year. These “allies” anchor his racing tactics, their names paying homage to cyclists Fränk and Andy Schleck, and Fabian Cancellara. Brash yet layered, Tōichirō’s chants of “Abs! Abs! Abs!” mid-race and muttered dialogues with his muscles unsettle teammates, masking insecurities conquered through discipline. Though courteous to seniors and rivals, he fiercely defends Hakone’s honor and revered figures like Hayato Shinkai. His appearance shifts with milestones: a shaved head yielding to spiked hair with shaved sides in third year, then reverting post-graduation. His unzipped jersey flaunts his form until formidable opponents prompt a tactical zip-up. Beyond cycling, he nurtures plants and bonsai with clockwork precision, devours zombie films, and balances bodybuilding with measured takoyaki indulgences. Aversion to pectoral contact contrasts his boldness. Later, quadriceps dubbed Peter and Mark unlock the leg-sacrificing Final-Muscle Sprint, epitomizing his relentless perfectionism. His legacy includes a pre-series victory and Hakone’s 42nd Summer Inter-High campaign, each stride a testament to power tempered by calculated risk.