The primary tool of a Kekkaishi is , the art of creating magical energy barriers.
The series is set primarily at Karasumori Academy, which is built on this sacred ground. By night, Yoshimori and Tokine patrol the campus to eliminate intruding demons using specialized barrier techniques. Core Concepts and Abilities Kekkaishi
Practitioners use specific commands: Hōi (Designate), Setsu (Place), Ketsu (Form), and finally Metsutō (Destroy) or Kai (Release). The primary tool of a Kekkaishi is ,