Kurahashi Mai is a normal girl who strives to be near her crush, Nimura Hiroki. He's a big fan of Sailor Moon, but is the star of the soccer team and popular. On her 16th Birthday, she is given an electronic notebook fitting for a young girl, that can do tasks like tell your fortune about your love. One night, she accidentally types "Epotoransu" and a boy called Takuma comes out of the notebook, and who will grant Mai one power for discovering that secret. As the story goes, what'll happen in this story?