Beautiful, - both the acting and the musical background. It's the first time I've watched a Korean movie and I fell in love with the language too! I liked how the Robot proved to be more Human than his human 'brother' throughout. But this is only because his mum, the scientist who created him, implanted in him those human qualities that she needed most: to be loved and cared for by her son, Nam Shin, who had been brutally taken away from her when he was little. So, the human Shin is brought up by his heartless grandfather, the Chairman of a big Company, while the robot Shin is brought up by his loving mother, and so he is capable of making friends and even fall in love with a human being, his female bodyguard. Very touching and addictive to watch if you like the idea that AI can learn what love means, and it can benefit us not necessarily as servants, but as really good companions.