Hiro Yukishiro

Hiro Yukishiro is the younger brother of the story's heroine, Nanako Yukishiro, and a fifth-grader at elementary school. Unlike their father, who tends to be overprotective and emotionally reactive, Hiro stands out for his remarkably calm and mature demeanor. He shares a close bond with his sister and often plays the role of a quiet, perceptive observer—gently supporting the budding romance between Nanako and Eiji Busujima from the sidelines. He serves as a steady and heartwarming presence within the Yukishiro household.