The thirteenth volume of Kamisama Kiss was originally published in Japan by Hakusensha on September 20th, 2012. It was originally published in English by Viz Media on August 6th, 2013.
Publisher's Summary[]
Himemiko is convinced that her human boyfriend Kotaro could never love her in her true form, and that dating a yokai will only put him in danger. Even though she feels she can no longer see him, she vows to avenge the wounds he suffered at the hands of Nishiki of Inuaki Swamp. But Himemiko and Nishiki have been engaged since they were young. Will her quest for revenge bring all-out war to the swamps?