Moriguchi Orito no Onmyoudou

is a Japanese light novel series written by Masaki Okayu, with illustrations by Torishimo. The series began publication on May 10, 2010 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
Haruka Nahara Hatsuki, an onmyoji girl who is a beautiful young lady but has an excessive delusion. And Orito Moriguchi, a self-proclaimed ordinary hero, decided to protect her as an onmyoji.

The next stage of these two people is what a "hell" !? A certain "shock situation" occurs, and the entire Kanto area is in danger of being destroyed ...! To avoid the end of the tragedy, Orito heads to hell to save Hatsuki! The weaver goes to the back with Onmyoji Sanzen-in, but what was waiting there was "Haruka Nahara Hatsuki Hell" by a large amount of Hatsuki-san ... !! How about the ending!