Shim had made movies for only kids for more than 10 years in Korea. The reviewers here saw this movie seem as adults. I don't watch Shim's movies since I became over 13. I don't know why you guys saw this movie???? Maybe there was something wrong with critics' review because I don't see they pointed this in their reviews. But in Korea, everyone knows, his movie is only watched by kids. It's more than Power ranger movie in US, pure 99% kid's movie. Because the reviewers of this movie here are adults and rate this movie in their level, the rate is also meaningless. For a little remedy, I'm giving 10 rating. It's that so funny to kids' eyes.