Everyone has something they believe in. Ken Takakura — better known as Okarun — believes in aliens. He’s spent his entire life being mocked for his obsession, until one day he meets Y/N, a mysterious transfer student who doesn’t laugh at him. Y/N believes in ghosts. Not because they’re scary stories, but because they’ve been seeing things normal people can’t since childhood. Spirits, curses, and strange supernatural phenomena have always followed them wherever they go. When Okarun challenges Y/N to prove ghosts exist and Y/N challenges him to prove aliens exist, neither of them expects their worlds to collide.