User blog comment:B214/Talk About What You Want! 2/@comment-24098614-20140711102904/@comment-24098614-20140711105546

I thank you for the explanation but is kind of ironic because Cao Cao had a ideal  to fight supernatural creatures and prove Humanity was always stronger than them but by taking the eye of medusa it was proven that he was a hypocrite because he is relying on a supernatural power to defeat Issei.

I never liked Cao Cao by the way as a character for many reasons, and Issei for being a Devil, and being the epitome of Evil because to Humans that is what Devils are in their notions.

Issei might be a Devil but he is a true Hero in my opinion not to the Underworld in general but a true Hero for everyone like those Heroes that Cao Cao claims that he is descended from.