Chapter 1: The Incident

'Six years ago there was an incident in the Kyoto region of Japan. A book used for demonic worship called 'The Dark Grimoire' was discovered to have been stolen, but the perpetrator was never found. Such a book was told to have the ability to summon a demon to shadow the caster or casters. Around that same time the disappearance of the Kunikai household occured, resulting in the three residents to inexplicably disappear as well as the charred remains of multiple bystanders to be found in the nearby park. All that remains is a smoldering crater where the household once stood.'