Packaged with the eighth volume of the light novel series, an OVA installment of Shinmai Maou no Testament unfolds. In the first segment, Maria, known for her mischievous nature, experiments with a cutting-edge succubus camera to capture Mio's intimate dreams. The second part follows Basara as he receives a surprising dinner invitation from Hasegawa Sensei, leading to an evening of unexpected generosity and warmth.