Synopsis: Neuroscientist Senichi Itabashi decides to test the concept of superhuman ideologies on his own brain, using research materials left by his grandfather from the wartime era. This experiment leads him to see and hear ghosts, yet he struggles to discern whether these visions and voices are genuine or merely figments of his imagination.
Admit this confusion, Ren, a female staff member from his favorite bar, appears before him, though something about her seems off. Upon visiting the bar, he discovers that police have begun investigating her disappearance.
Is Ren truly dead? And if so, who killed her? To verify the outcomes of his experiment and his own senses, Senichi seeks the cooperation of the deceased that appear around him and a medium, delving into the truth behind her death and the identity of the perpetrator.