Dandadan

Momo Ayase belongs to a long line of spirit mediums and refuses to believe in aliens. Her classmate Okarun — a name she gives him because his real one is forbidden in his family — is the local UFO obsessive and refuses to believe in ghosts. To settle their argument on professional grounds, they each go to a paranormal hotspot. Momo to a hilltop where aliens have been reported. Okarun to a tunnel where ghosts have been seen. They are both right. The manga is the resulting partnership: Okarun gets cursed with Turbo Granny's legs, Momo unlocks psychic powers, the world gets weirder weekly.