By the way I found a video which basically sums up the plot of Lucky Star
http://http://www.youtube.com/watch?v=fwdV2vWNvZw&list=FLVeldfInS-TSDy7n9XH258w&index=5&feature=plpp_video
http://http://www.youtube.com/watch?v=fwdV2vWNvZw&list=FLVeldfInS-TSDy7n9XH258w&index=5&feature=plpp_video