What is the author's style in Shizuko's Daughter by Kyoko Mori?

Although this story is not written in a first person point of view, the use of dates as part of the title of each chapter gives the feeling that this story is written as if it were a journal. Despite the fact that the third person narrator switches from one character to another in various chapters, the specific dates carry over, thus providing a sense that there is some omniscient narrator who is recording the events in a special, universal journal. In this way, the story reads as if it were fact, an actual occurrence.