The "Twin Star Exorcists" are fated to produce the child prophesied to end the war with the monstrous Kegare... But can Rokuro and Benio get along for five minutes, let alone save the world?

Benio and Rokuro must work together to wield their Resonance Attack against Benio's own long-lost brother! Then, with Benio gravely injured, the Basara who killed her parents offers her a terrible alternative to death...