In accordance with Tokimori Hazama's teachings, a Kekkaishi should strive not to involve normal people in matters of the spirit world. To this end, any damage suffered to a site during battle should afterward be repaired by the Kekkaishi involved. As Karasumori Academy takes damage from Ayakashi (as well as overly enthusiastic Kekkaishi) on an almost nightly basis, Yoshimori and Tokine spend a great deal of time fixing the damage, possibly more than they do actually fighting on some nights. Kekkaishi are not allowed to use the actual restoration technique outside of Karasumori, and are scolded by their elders for breaking this rule (such as Shigemori scolding Yoshimori).