Juuou Mujin no Fafnir

With the sudden appearance of the monsters that came to be called Dragons, the world had completely changed. Before long, within the human race supernatural girls with the power of the dragons, called "D", were born. The secret existence of the only male "D", the boy Mononobe Yuu, was forcefully thrown into the school where the girls of "D" gathered - Midgar, where he saw the naked body of one of the students, Iris. Furthermore, meeting his long lost sister Mitsuki, Yuu seems to have been enroll...