Azusa Shiratori is the female half of "The Golden Pair of Kolhotz High School". She is well known for her obsession for collecting things that she regards as being cute and then giving them names, usually with a French origin. "Azusa" means "catalpa tree" while "Shiratori" means "white bird".

Azusa is very unintelligent (a "half-wit" in the words of Kuno) and strange even by the standards of the series. Shiratori is a kleptomaniac and feels the need to take random objects and people regardless of ownership. If Azusa is denied, she will throw a childish tantrum and resort to violence, until she either has the object returned or is shouted at to stop.

It is worthy of note that the "level" of Azusa's kleptomania varies between the manga and anime continuities, with her being only shown to have in her possession one object at a time in the manga (the only possible exception being her having "Françoise" and "Charlotte" at the same time, although Akane was technically in possession of "Charlotte" at the time). In contrast, the anime shows Azusa as having multiple objects in her possession at the same time, each with it's own name (Azusa will also greet each object individually in the morning and evening) all of which reside in her home.