Dandadan, Vol. 1

Skeptical classmates make a bet: Momo Ayase, who believes in ghosts but not aliens, and the bullied occult otaku Ken Takakura, whom she nicknames Okarun, each set out to disprove the other. Momo is instead snatched by grey aliens who awaken her latent psychic powers, inherited from her spirit-medium grandmother Seiko.

Okarun is cursed by the yokai Turbo Granny; in exchange he gains her monstrous speed whenever he takes off his glasses, though the curse threatens to consume him. The two are thrown together, each forced to admit the other was right, and begin fighting the paranormal and extraterrestrial forces closing in on them.

The first volume establishes the ghosts-vs-aliens premise, the budding attraction between the leads, and the series' blend of horror-action and crude comedy.