Nao Tokieda

Nao is the main character in this manga. she finds out from her dad that , because of a dept he has , she is engaged. after half a year she goes to Kaei Academy , her first year in high school , because her fiance goes there to. she doesn't know his name , she has just 5 hints to find him. at that school , there are 7 important students called "the 7 stars of Kaei Academy", and she is one of them. betwen the 7 stars there are 5 guys, each of them maches one hint! does she really have just a fiance?