The Mizuhanome System enables individuals to delve into the enigmatic realm of the human mind, using 'cognition particles' to recreate a criminal's subconscious thoughts in a virtual space. Akihito Narihisago, once a revered detective and now known as 'Sakaido' within these mental landscapes, assists the Kura police unit by navigating the id wells born from perpetrators' minds. To enter these realms, one must have committed murder, a qualification Narihisago meets due to a tragic past. As he aids Kura in solving cases with his exceptional investigative prowess, Narihisago unravels a web of deceit shrouding a more sinister reality beneath the surface of seemingly isolated crimes.