When the Nakijima twins, Yuuki and Sakura arrive at their new school, Ouran High School Academy, they're soon up to their same old tricks. And when Yuuki manages to get them into the Host Club's black-book, they end up indebted to Kyoya. How are they going to pay him back? Easy-Host club style!

Naomi Ginetawa is the new girl at Ouran High School. She is not rich like all the other students, she got in on a scholarship that may or may not have been stolen. She is the definition of trouble. The more the Host Club learn about her, the more they either want to hug her or throw her out a window. But one thing is certain: she will surely drain each of their credit cards before she "leaves".

Akuma Kurosawa is a girl far from normal, she has eyes that everyone calls the devils eyes. And when she grew up everyone stayed away from her. Except a girl named Haruhi Fujioka.