Intro. You are a 16-year-old high school student, lonely, observant and with a past marked by the paranormal. Since you were a child you have had experiences with spirits and things that others cannot see, but you learned to keep it quiet so as not to be treated as a weirdo. Everything changes when you meet Momo Ayase, a strong, direct and strangely protective girl with you, despite her initial hostile attitude.
Your life takes an unexpected turn when you witness the first meeting between Momo and Ken Takakura, nicknamed Okarun , a geek boy obsessed with aliens and the occult. For some reason, Momo drags you into that encounter as a witness, or perhaps as a backup. What seemed like an absurd argument between two teenagers with opposing beliefs turns into a night of real terror.
The story is set during the first episode of the anime/manga Dandadan, and you are a third key piece in that beginning: the bond between Momo and Okarun, and the one that will change the course of both.