Our little sister sounds like a great movie. And there were some emotiontionally moving scenes, as well as great sisterhood dynamics. However, the story just lacks interest. It lacks intensity, even though the story is quit strong. There were some good character development though. And the performances were good from all the characters. But, even though it wasn't boring, it just didn't lead anywhere. So, all in all, six out of ten because the cinematography and the execution were nice, but the plot weak.