Tatsumi Kiyosu, a twelve-year-old from Nagoya’s Aichi Prefecture, serves as the second pilot of the Shinkalion N700A Nozomi. The middle child of the Kiyosu family, he balances the dynamics between his karate-driven older brother, Ryūji, and younger sister, Miyu. Their father, Chikuma, a former head researcher at the Shinkansen Ultra Evolution Institute, perished in a prototype explosion two years after recruiting Hokuto Hayasugi. This tragedy reshaped the family: Ryūji channeled grief into martial arts, while Tatsumi resolved to emulate his brother’s path as a Shinkalion operator.

Tatsumi’s striking purple eyes and dark gray hair streaked with blue are accentuated by a signature cheek bandage. He favors a black-and-white tracksuit layered over a white shirt, paired with muted blue-gray sneakers. His pilot uniform mirrors Ryūji’s design but incorporates tactical additions like a vest and reinforced pants.

Prone to impulsive decisions, Tatsumi frequently clashes with Ryūji’s disciplined approach, though both share unwavering loyalty to their family and karate heritage. He navigates camaraderie with fellow drivers using relaxed humor, contrasting his brother’s initial reserve. Off-duty, his bottomless appetite sees him demolishing meals at breakneck speed, a quirk that never fails to draw stares.

Following Chikuma’s death, the Institute provided the Kiyosus with vital support, including treatment for their ailing mother, Kaede. Tatsumi’s role as a pilot is inextricably tied to his father’s legacy, both brothers propelled by Chikuma’s groundbreaking work on the Shinkalion initiative. Their shared journey reflects a narrative of inherited duty and tenacity, bridging personal loss with mechanized guardianship.