A nerd must fight powerful spirits and aliens all vying for the secret power of his "family jewel," so who better to fight alongside him than his high school crush and a spirit granny?! Momo Ayase and Okarun are on opposite sides of the paranormal spectrum regarding what they'll believe in and what they won't. Their quest to prove each other wrong leads them down a path of secret crushes and paranormal battles they'll have to participate in to believe! Rin and Yukishiro were reduced to nothing but heads by the severed-head dribblers, but thanks to Aira and Kawabanga's quick thinking, they manage to get their bodies back! Yukishiro is now able to remember that the person who'd been threatening students and providing them with knives was their teacher Mr. Murakami. Meanwhile, as their classmate Hase launches an attack alongside aliens from outer space, Okarun and Kinta find themselves on the defensive, unable to do anything but hold the line!.