It is a collection of stories, anecdotes, etc from the perspective of a teacher at a Japanese language school. If you have ever attended a Japanese language school, or are interested in why Japanese language is the way it is (why is the standard polite is です・ます and not でありますす、why one kanji has so many different readings, etc) this is the manga for you. Almost everything has furigana, so even if you don't know that many kanji you should be fine. I like how Nagiko, the author and the main charac