Morihito Otogi, a high school student who comes from the Ogra line, enjoys a calm, ordinary life as long as his childhood friend, Nico, moves in with him. Nico is a witch training and decides to be her friend Morihito. While Nico is excited to re -combination with her old friend and crushing, Morihito is designed to protect her against the predicted misfortune. Between the unpredictable chaos caused by Nico's magic and the awkwardness of sharing the house, their lives are becoming supernatural mornings and threats.