Kimura-sensei is a character from Azumanga Daioh. He's the Lit/Classics teacher, and the only reason he joined the school is because he's got a thing for high school girls. The way he's portrayed varies in between candidate-for-sainthood (helping clean as much litter off the street as possible, growing gardens) to creepiest/sickest-man-alive ("Damn, I wish I were peeping," and a lot of gags that I don't want to give away).