The story started with a promise. A girl named ASAKURA, KIMI ANN who was given a friendship token by her childhood friend who's about to leave her due to some unexplained reasons. Then, 10 years after and now she's a second year high school student. A new chapter of her life will open as she met her 1st year rival/classmate NAKAZATO, MIZUKI along with the new transfer student FUJWARA, REYOSUKE.One unexpected day, MIZUKI saw the token of KIMI ANN lying on the floor. Instead of returning it, he made a condition with her and that condition is her being his maid in exchange for her token.....