Handa, Sei

半田清舟

A calligrapher who disgraced himself by punching an art gallery director who had heavily criticized his calligraphy style as "boring," "rigid," "academic," and "bland." He then travels to the Goto Islands in Nagasaki, at the suggestion of his famous calligrapher father, to focus more on his calligraphy while he waits out his "exile." Along the way, he finds value in interactions with other people, particularly a tomboyish little girl named Naru, and discovers his inspiration and own personal style.
At first, Naru calls him "Junon Boy," referring to a particular magazine that features street pictures of male idols, suggesting (incorrectly) that he is a city-dwelling pretty boy of the kind that don't really exist in real life. Later on, she calls him "Sensei."
Sei Handa appears again in another manga titled Handa-kun, a prequel of sorts featuring Handa during his high school years. In the prequel, he is a well-regarded school idol and prodigy calligrapher who holds the hilariously mistaken belief that no one likes him and that the distantly worshipful actions of his peers are in fact bullying. This is apparently the fault of his best friend in both series, Kawafuji, who told him a lie that he was "hated" as a joke, which Handa mistook for the truth, and his friend never actually tried to correct because he found it funny and amusing.

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