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The Main Characters are Yoshimoru Sumimura and Tokine Yukimura. Their families are rivals, Tokines father, didn't care for it much though. The anomalies they look for are monsters, they must capture them and see if they are benign or malevolent. These are the stuff they use:

Hoi (方囲 Hōi?, "Engulf"): Designates a target.
Joso (定礎 Jōso?, "Cornerstone"): Determines where to create the kekkai.
Ketsu (結?, "Bind"): Creates and activates the kekkai.
Kai (解?, "Release"): Dispels the kekkai without injuring the target trapped inside.
Metsu (滅?, "Destroy"): Collapses a kekkai, destroying what is trapped inside.
Tenketsu (天穴?, "Heavenly hole"): Opens a door to another world and sends the shards of the enemy through to prevent regeneration. This technique requires using a shakujo, a Buddhist ringed staff, to perform it.
Zekkai (絶界?, "Absolute boundary"): A technique that allows the user to either repel an attack or harm an enemy. Depending on the strength of the user, it appears as a black aura that varies in form. Because it is created by the domination of negative feelings, it is recommended that it not be used excessively.
Shinkai (真界?, "True boundary"): A technique to create a new world and consumes much more power than Zekkai. Tokimori Hazama stated that it's a technique close to the power of a god.
Nenshi (念糸?, "Thread"): A technique that creates an energy thread. It is used for binding, capturing, and torture by squeezing. The nenshi comes out from the palm of the user. The seal around the neck of Madaro, Yoshimori's spirit familiar, is made of beads strung on a circle of nenshi.
Sekkai: A technique used to destroy foreign kekkai. Tokine attempts to use this to dispel Yoshimori's kekkai in Kokuborou but could not because his kekkai was too strong.
Shuufuku (修復?, "Restoration"): Restoration art, repairs an object.
Shikigami (式神?): Paper dolls that obey the commands of a kekkai user.
Musou (無想?, "Thoughtless"): A state of mind where the user is not influenced by any force, it increases speed, power, and effectiveness of kekkai.