Masakiyo Dōbashi serves as vice-captain of the Hakone Academy Bicycle Racing Club during his third year. He holds the position of ace sprinter on Hakone's Inter High team, a role secured since his second year. Physically imposing, he stands as the largest and most bulky member of the cycling team, with a hairstyle fluctuating between short and long lengths. His personality blends loud confidence with a need for pre-race quiet, reacting negatively to disruptions during concentration periods. Dōbashi exhibits impulsiveness and physical aggression towards those contradicting his beliefs or approaching training unseriously, often resulting in destroyed equipment like bike handles and jersey zippers – a preference for durable aluminum over carbon stems from this. Historically criticized for emotional control during races, he initially suppressed his impulses. Guided by senior teammate Touichirou Izumida, he learned to channel his emotions freely in competition, significantly improving his performance. He finds boredom racing lesser opponents but experiences genuine joy when challenged by formidable competitors pushing him to his limits. Skill-wise, Dōbashi commands fear as the "Monster" sprinter. By his third year, he developed a distinctive two-phase acceleration: "Aventador (闘牛)" applies partial focused intensity, while "Huracan (猛牛)" unleashes full power and unchecked emotion, sometimes damaging equipment like jersey zippers mid-race. His relationships reflect complex growth. The dynamic with Touichirou Izumida began when Izumida invited him to train, recognizing Dōbashi's emotional struggle. Izumida provided crucial advice on channeling strength and later advocated for his full energy expenditure in races. An initial encounter with Issa Kaburagi was hostile, sparked by a restroom confrontation where Dōbashi insulted Kaburagi's team, Sohoku. Yet, witnessing Kaburagi's growth during the Inter High fostered respect, leading Dōbashi to strategically forgo challenging him at a sprinter checkpoint. Despite sharing the same grade, Dōbashi and teammate Sangaku Manami possess contrasting racing philosophies. Dōbashi initially struggled to understand Manami but gained insight through his own Inter High experiences, strengthening their camaraderie. Personal trivia includes his Kansai-region dialect. He enjoys cucumber, pork roast, cabbage, bok choy, taro boiled in broth, and okra. Dislikes encompass loud noises, pre-race disruptions, broken handlebars, people neglecting training, and being asked if he is angry – countering with "I'm not mad, this is my normal face." He resides in Hakone's dormitory, has two older brothers, is proficient at ping pong, and holds Hakone's record for most cycling club resignations (three times). He does not sleep during class and, despite his intimidating size, completes requested tasks earnestly.