Kagutaba is the main antagonist from the horror movie Noroi: The Curse. It is a malicious entity, a demon, summoned by a group of sorcerers in a village named Shimokage. They developed a type of sorcery, known as "Shimokage's Way", and one of their spells was called the "Kagutaba method" which was a deadly spell that was sent to a person opposing them, and thus the role of Kagutaba.
During a summoning an incident happened and Kagutaba disobeyed the sorcerer's instructions by doing evil things of its own. The sorcerer had no choice but to imprison it underground.