Comments of chapter undefined of Mad Wolf Knight(DxD)

Okay, so far in the story. This is my opinion. This is not meant to criticize anything. It may be considered a critique at mosthis is a little dark to be in the d. XD world, I know there's other parts of the world. And this is kind of a prequel, at least I think it is cause it's definitely not Daring the high school part. But I don't understand why it wasn't an original book. Why borrow names and things like? That you could have wrote your own story with as much detail. As went into this or who ever wrote it. It just confuses me how many people want to do a fan fiction, when they have enough material to write an original work.