The misadventures of Issei Hyoudou, highschool pervert and aspiring Harem King, continue on in highschool DxD New. because the members of the Occult Research Club perform their regular activities, it becomes increasingly obvious that there’s something wrong with their Knight, the usually composed and alert Yuuto Kiba. Soon, Issei learns of Kiba’s dark, bloody past and its connection to the mysterious Holy Swords. Once the topic of a cruel experiment, Kiba now seeks revenge on all those that wronged him.
With the return of an old enemy, also because the appearance of two new, Holy Sword-wielding beauties, it is not long before Issei and his Devil comrades are plunged into a twisted plot another time.