Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Is a thriller that isn't fun still categorized a thriller?

This Japanese independent film, I believe, is the only independent film of the summer that I truly disliked. The movie revolves around a serial killer with the power to control minds to do his killing. I might have liked it if it weren't so long and repetitive, (one killing after another with almost no further plot development- not a good thing when dealing with repetition), and maybe had some three dimensional characters. Unfortunately, the gratuitous violence, which I can rarely, but this time, honestly say, is gratuitous, doesn't make up for the movie's lack of energy, rhythm, or characters, not to mention the far-fetched plot that would have required an ounce of creativity to pull off.