Lucky Star's story mainly portrays the lives of nine Japanese girls and one American girl attending a Japanese high school named Ryoo with a laughable sense of humor. The setting is mainly based on the city of Kasukabe in Saitama Prefecture.The main character is Konata Izumi, an athletic and somewhat intelligent (even though she likes to copy), but also slightly mischievous and laid-back girl who, despite these attributes, is not in a sports club and has to resort to all-nighter cramming for tests. She would rather read manga and play video games than do her homework.