Will Haruna's high school debut end up in heartbreak hotel?

Hapless Haruna needs help finding a boyfriend! After failing to win the eye of any guy in high school, Haruna enlists the help of cute upperclassman Yoh to coach her on how to make herself more appealing to the male species. Yoh agrees, with one catch: Haruna had better not fall for him!

Just when things are going well for Haruna, in walks transfer student Leona Matsuzaka. Beautiful Leona's got only one thing in mind--to destroy Haruna's happiness! Who is this vengeful girl and why does she want to hurt Haruna so badly?