Botchan by Natsume Sōseki

Botchan (坊っちゃん) is a novel written by Natsume Sōseki (real name: Kin'nosuke Natsume) in 1906. It is considered to be one of the most popular novels in Japan, read by most Japanese during their childhood. The central theme of the story is morality. (from Wikipedia)

In its simplest understanding, "Botchan" may be taken as an episode in the life of a son born in Tokyo, hot-blooded, simple-hearted, pure as crystal and sturdy as a towering rock, honest and straight to a fault, intolerant of the least injustice and a volunteer ever ready to champion what he considers right and good. Children may read it as a "story of man who tried to be honest." It is a light, amusing and, at the name time, instructive story, with no tangle of love affairs, no scheme of blood-curdling scenes or nothing startling or sensational in the plot or characters. (from the translator)