This one also comes in a keepcase and has an ISBN number (ISBN4-08-909144-6).
There is less pressure for meeting time limit compared to the anime production, so the story is more detailed and the critical moments are extended. For example, the big argument between Sachiko and Yumi is a lot more intense. Well, I guess you can't really call it an argument since Yumi just cries. And I thought the anime version was intense enough, too. Boy, is this version intense!