Hiro is an ordinary first-year student who enjoys her quiet school life. One day, she picks up a drawing by Toshinou Kyouko which causes her classmate Aoi to mistake Hiro for the artist. Unable to clear up the misunderstanding, Hiro is persuaded to create a doujin game together with Aoi-chan.

Living in the high school student dormitories is first-year student Araki Jin. His archeologist parents have sent him a mysterious lamp that, once polished, causes the academy’s idol Zadou Sierra to abruptly appear! What’s more, she is dressed in a maid outfit! After she appears, her father arrives and explains that Sierra is a descendent of a lamp genie and that a genie needs to grant their master’s wishes in order to grow up.