The only male teacher frequently seen in the series, Kimura has a distinctive open-mouthed expression and an uncanny ability to appear out of nowhere, which tends to unnerve most of the female students. Despite showing signs of responsibility and kindness—he recycles discarded cans, donates regularly to charities, and even offered 10,000 yen at a Shinto shrine for world peace—he openly admits to enjoying the sight of girls in bloomers and swimsuits. He even confessed that he became a teacher because he likes looking at schoolgirls. While the girls find this behavior perverted, it creates a sense of camaraderie with the male students, many of whom share similar desires.
Surprisingly, Kimura is married to a kind and attractive young woman and has a normal young daughter. This revelation comes as a shock to everyone around him.
