Dandadan

Momo Ayase befriends a classmate obsessed with UFOs, whom she calls "Okarun" due to his name being considered taboo. Momo believes in spirits but dismisses aliens, while Okarun holds the opposite view. To challenge each other's beliefs, they travel to locations that support their respective sides—Momo to a UFO site and Okarun to a supposedly haunted tunnel. Their journey leads to a developing relationship, along with encounters involving strange extraterrestrials and otherworldly entities.