Yoshimori's absentee mother, Sumiko, appears at Karasumori to lead Yoshimori and Tokine through a labyrinth to find and remove the site's mysterious guardian, but they wonder if either Sumiko or Karasumori's guardian can be trusted.

"A powerful witch prepares to unleash a final devastating assault on Karasumori! Will Yoshimori be able to master his mind in time to access his full kekkai potential and thwart her? Meanwhile, his brother Masamori learns that a different type of mind control is corrupting the Shadow Organization. How can the Council of Twelve fulfill their mission to protect humanity from dark magical forces when they can't even trust each other...? "--Cover.

"A mysterious guardian deity attacks the Karasumori School! Slaying a deity is a terrible crime, but Yoshimori and Tokine have vowed to protect their mystical site at any cost. The battle rages on, and the kekkaishi are quickly running out of options..."--P. [4] of cover.

The fate of Kokuboro ayakashi lies in Yoshimori's hands as fights to get out of Kouboro Castle alive. If he survives and returns home as the conquering hero, an even greater evil may lie in wait.

By night, teenager Yoshimori Sumimura is a "kekkaishi"--a demon-hunter who specializes in creating magical barriers around his prey. By day, Yoshimori's got other demons to battle: an addiction to sweets and a seriously crotchety grandfather! Yoshimori's pretty neighbor and childhood friend, Tokine Yukimura, is also a kekkaishi, but their families are feuding over who is the true practitioner of the art. Who among our friends and enemies will sacrifice...