Dragon of the Eldritch

Instead of a fallen angel, Issei is approached by a very different girl. One who takes great offence to attempts on Issei's life. The Supernatural realms of Earth are about to find out how small they really are, now that Azathoth has found her beloved. Issei steadily ascending into Eldritch-Godhood, a harem including female Eldritch, and various Cthulhu/Lovecraft elements.