Ark Academy, chosen as a model case for a school that incorporates different races. Worried about Ursula, who hasn't been coming to school lately, a teacher tracks her down to the red-light district at night. Ursula, in her school uniform, is a highly suggestive figure in the nighttime streets. The teacher tries to bring her back from her dangerous activities, but even he is toyed with by Ursula. Ursula's intense torment and passionate encounter with her transformed body. As he is immersed in irresistible pleasure, Ursula whispers: "Forget everything and become mine." Her voluptuous body satisfies a man's carnal desires, and her seductive invitation makes him forget to resist. Caught between his desires as a man and his reason as a teacher, what kind of future does he truly desire? And what are the true feelings of Ursula, the princess of the dragon race...? Ursula's beautiful breasts, trembling softly on her tanned skin. As her body has grown larger, her ultimate weapon has become even more voluptuous and beautiful. How long can your [censored] withstand her?