"Mikan and her friends are 6th graders now, but the new school year is starting off on an uncomfortable foot. The school president introduces the newly created Public Morals Squad during the opening ceremony, and it's pretty clear whose behavior they will be keeping the closest eye on. To top it off, there's a new student in Mikan's class! Welcome, Luna Koizumi! But for an apparently gentle girl with a sickly demeanor, she seems like she's up to something ..."--Page 4 of cover.