Masaya is a first-grade student with a notably large physical stature compared to his peers. Despite his size, he exhibits a timid and dependent personality, often crying in challenging or frightening situations. He relies heavily on his friend Akiyo, a small but capable second-grader, especially for daily tasks like walking to school. Masaya fears the dark path to school and cannot navigate it alone, requiring Akiyo to hold his hand for reassurance during their commute.

Masaya deeply admires Akiyo for her strength and capability, viewing her as a role model. This admiration drives him to take significant action when an incident leaves Akiyo visibly distressed and in tears. Determined to lift her spirits, Masaya resolves to find spotted bellflowers, a type of flower he knows she loves. He independently embarks on a trek to the distant Ipponsugi forest—a place he recalls visiting with his grandfather—to locate the flowers.

The journey represents Masaya's initial steps toward overcoming his fears. Despite his habitual reliance on others and anxiety about daunting environments, he pushes forward alone. His actions demonstrate a shift from dependence to proactive determination, fueled by his desire to bring happiness to Akiyo.

Masaya's connection to his grandfather provides context for his knowledge of the flowers' habitat and underscores the personal significance of his quest.