Nagisa has collapsed! Kojou rushes to the hospital but suddenly a mysterious girl appears and she looks just like Avrora the former Fourth Primogenitor She backs Kojou into a corner--but is she the real Avrora? Through this encounter Kojou regains his lost memories what will he remember? Finally Kojou&39;s past and the secrets of the Fourth Primogenitor are revealed!About the AuthorManyako is the illustrator behind the Strike the Blood light novel seriesGakuto Mikumo is the author behind the light novel series Asura Cryin&39; The Mystic Archives of Dantalian and Strike the Blood