The script really is slow, with nothing remotely interesting happening until the final few minutes. But what an ending.
A cruel indictment on contemporary Japanese youth and their despondency, which unravels its cruel web satisfactorily.
With huge jump scares and more subtle, creepy moments, this is a film which has mastered the whole spectrum of horror filmmaking.
A great example of how the first-person horror subgenre works its magic, but it also highlights some of its core flaws.