Ken Shinozaki rides with the Centaurs, a Yokohama-based biker gang evoking the mythic Greek hybrids of man and steed. His singular drive stems from a bitter rivalry with fellow Centaur Arthur Clayton, fueled by their competing obsession with a woman known as Lady—a conflict resolved through a climactic high-stakes motorcycle race. Fixated on Lady, Ken pursues her relentlessly, ignoring her unambiguous rejections. His advances escalate to an attempted assault and a later sexual encounter, though she maintains emotional detachment. He exhibits consistent abrasiveness, treating others with contempt—including Akane, a fast-food worker who aids him, and a motorcycle mechanic—revealing a pattern of callousness. Ken’s narrative arc remains static, devoid of growth or redemptive qualities. His actions pivot solely on outperforming Arthur in races and fixating on Lady, his personality and ambitions unchanged throughout. Secondary characters like Arthur gain more depth, with explored backstories and motivations contrasting Ken’s flat trajectory. No further details are provided about Ken’s past, potential developments in other media, or expanded universe lore beyond the original OVA.