In elementary school, Kurotori Chiyoko, an avid lover of the occult, is asked by a friend to perform a love fortune-telling. While attempting to summon Cupid, Chiyoko's blocked nose leads her to mistakenly conjure Gyubid, a witch. Embracing this twist of fate, Chiyoko embarks on a journey to master witchcraft under Gyubid, who boasts of being the most glamorous magic tutor around. Enduring rigorous training and facing severe consequences for any negligence, Chiyoko manages to keep her magical studies undercover, aided by Gyubid's invisible presence to everyone else.