The three kekkaishi-in-arms, Tokine, Yoshimori, and Gen, are not getting along! So much so that Gen's sensei, Atora, challenges them to a task requiring real teamwork! But their loyalty to each other is really tested when the Kokuboro princess falls ill, and the ayakashi attempt to cure her! Plus, Gen receives a strange gift from an enemy--one that may reveal something about himself that he would prefer not to know!