There is a super-rich school. It is really hard to pass the entrance exam. Yes, it is a common knowledge the chosen few are allowed to enter the school. But one day, the school announces that they are accepting in a tuition-exempt student. The main character is Kazuki. He hears the news as well, but he is not interested in it. Several months later, the result comes out. The student who passed the entrance exam is Kanade, Kazuki's old friend. "Oh, what should I do...?" She never expected she would pass, so she is totally panicked. When she receives a document from the school, she gets surprised again, "Students are required to have butlers." Kanade says to Kazuki, "Please be my butler!" Like this, he reluctantly becomes her butler... On their first day at school, they enter a completely different world from their old one. Kazuki and Kanade's new school life now begins...