Our protagonist, Kamiyu, was hailed as a talented actor, but he committed an assault and was kicked out of the entertainment industry at a young age. 12 personalities reside within him, and they steal his consciousness, causing harm to those around him, leading to him being framed for the crime and living with an unease. With the help of his 12 personalities, he solves a murder that took place at an underground idol photoshoot! This is the grand opening of a full-scale dark mystery!