Noritaka Hamazaki, better known by the nickname Hamaji, is a third-grade student in the same class as the protagonist Maruko. He is based on a real classmate from the author’s own school days. Hamaji comes from a modest household; he lives with his parents, a younger brother, and his grandfather in an older, somewhat rundown home. His appearance is distinctive, with short black bangs, visible lips, and pointed teeth.

In the film Eiga Chibi Maruko-chan: Italia kara Kita Shōnen, Hamaji retains his role as the class clown. His personality is outgoing and humorous – he regularly tells jokes that resemble stand‑up comedy and often acts as a mood‑maker among his peers. He is quick to speak his mind during class discussions and is generally well‑liked for his honest and cheerful nature. His primary motivation is to enjoy himself and keep those around him entertained.

Within the story, Hamaji is one of the classmates who interact with the group of international children visiting the town. Although the film focuses on Maruko’s relationship with the Italian boy Andrea, Hamaji appears in group scenes such as the Osaka and Kyoto trip, contributing his usual lighthearted energy to the shared adventures. His closest friend is Bootaro, and he is frequently seen alongside him and other friends like Maruko and Tamae. Hamaji does not undergo a major personal arc in this film; instead, he serves as a steady source of comic relief and camaraderie, helping to maintain the friendly, lively atmosphere of the class.

His notable ability is his natural talent for making people laugh, which helps ease tension and bring the group together during unfamiliar situations. He also shows a willingness to voice honest opinions, even when they are not purely funny, reflecting a straightforward and approachable character.