Life is a series of choices; one must make important decisions at various points in one’s life. Shinkurou is a poor guy barely getting by every day while troubled by debts. Yue is a dark-skinned maid who was tasked with a secret mission from her mother country Elgandia. They came together on the main street in the resort town Oumisaka, and she asked him to enrol for a year at Oumisaka Girl’s Private School as Yang, the Crown Prince of Elgandia. Thus, he ended up in the midst of a maiden’s garden with only the daughters of the elite. He must abide by two rules: he must not reveal to anyone that he is a fake, and he must capture the heart of a princess. A tragic end would await them if he was unable to keep this oath. How will he act along with the princesses? Will he be able to ad lib through the entire year?