Ever since the car accident, a strange system has appeared in Hikigaya’s mind. Not only that, he has often been able to see hideous things that the system refers to as "evil spirits." He originally thought he was the only one who could see them. That is, until one day three months later, a girl named Yotsuya Miko appeared within his field of vision—and she looked terrified while staring at the evil spirit behind him... From that moment on, the truth of the world began to reveal itself to him!