A threat has shown itself in Kuoh town, Inves, but a hero has shown itself to protect the innocent from these creatures, Armoured Rider Mars. However, the identity of this hero is unknown, and the one behind the mask is, (Y/n) (L/n), the most commonly bullied kid in school, no friends to speak of, but still nobel enough to stand up for others, even taking the beatings for others so they dont have to take them. (No, this is not describing an abuse story, none of ORC are his bullies) the only people who have ever stood up for him were, Kiba, Koneko, Sona, Akeno, Rias, and one time even Issei.

Orc has no clue who Mars is, as they can never confront him because they cant reveal themselves during Inves invasions.

The reader does not get reincarnated as a devil, his Familiar will be a Kirin(japanese dragon unicorn with storm powers, species born from a Dragon mating with a Unicorn). The reader saves Issei from Raynare.

Harem: Koneko, Kuroka, Raynare, Kalawarner, Kuroka, Yasaka.