Instead of conjuring a dangerous demon, Shouta Magatsuchi accidentally summons the naive and carefree dragon deity Quetzalcoatl, also known as "Lucoa." Now a familiar to the young mage, Lucoa does all she can to assist Shouta with the problems he frequently encounters; however, her overwhelmingly full-frontal approach suggests otherwise! While the misunderstandings between them may never end, their chaotic daily lives provide endless opportunities for the duo to grow ever closer unknowingly. [Written by MAL Rewrite]