Issei Hyoudou is no ordinary human. He is a hybrid. Born between a dragon and a Nekomata. To add to this, he is the host of the Boosted Gear. Exposed to the supernatural world at young age, he tried to escape from it and live a normal life. However, the fate is cruel and is dragging Issei back to the world he just escaped from. Harem of course or it won't be DxD.

Issei thought he was human, but apparently, that's only half-true. Introduced to the supernatural world at a young age, Issei's life is shattered and changes in ways he could never imagine. Begins as AU. Takes some inspiration from other anime/manga. Issei x Harem

Issei didn't know what he was getting into when he made a deal with The Red Dragon Emperor, all he knew, was his friend was in danger and he needed to save her, no matter the cost. Eventually, Issei finds himself mixed up in the world of Angels, Devils and Fallen Angels, however, at least he has a way to fight for those he cares about. Less perverted, powerful, Dragon Issei. Harem.

Consider this a present to all my readers. My own crackpot theory on why the two Heavenly Dragons started fighting long ago. Not to be taken seriously, but it is based on what has happened so far in the Light Novels