To Mend A Broken Heart, is a crossover fanfiction, written in collaboration by Code-Emperor07 and Demons Anarchy of Pride. The series crosses Highschool DxD with the world of Tokyo Ghoul, set in a world where Issei becomes a Ghoul after being captured by Aogiri Tree. It is set at the end of the Tokyo Ghoul manga, and after the battle with Loki.