DxD: The Uncrowned Super Devil

[Reincarnation Centre]

[A place every person who naturally reincarnates must go through, regardless of their world or situation, and as long as they're getting reincarnated, they must pass through this place, although their memories of this place are erased.]

[The only two ways to enter the reincarnation centre are either destiny, like most protagonists, or having too many Karma Points for your world to be able to manage your soul's reincarnation.]

One day, a soul with an overwhelming number of both Positive and Negative Karma Points arrived at the Reincarnation Centre, enough to even shock the Manager of the place.

"You... What the hell was your occupation?"

That was the only thing the person in charge at the Reincarnation Centre could ask after looking at the soul's Karma Points.

The soul smiled and politely replied.

"I was a doctor, a really good doctor."

And so, his life in an unknown fantasy world filled with mysteries and danger began.