Rikka’s dream is to become a servant for his sickly cousin Hai. This spring she joined him at Rinka Gakuen, a school for the upper class, but she caused trouble shortly upon arrival and was confined to a special correctional dormitory known as ‘the prison’. He refused to believe that the pretty and refined Hai would do such a thing, so he dressed as a maid to infiltrate the dormitory as Yuki with the help of the student council president Yukia.
However, when he met her again inside, he discovered that she was actually a carefree tomboy… exactly the opposite of what he thought she was! Moreover, everyone else there had a completely different side! Hai had an absurd request for him: she wanted him to help set her up with… himself. His dual life with doubled-faced girls has begun!