Dandadan vol 21

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!
 
Momo and the others successfully capture Yukishiro, the student controlling the pygmies, and get her to explain why she attacked them. However, Yukishiro can't seem to remember the teacher who threatened her and forced her powers onto her. The group decides to enlist her help in tracking down this mysterious teacher. Meanwhile, as Seiko is consulting her occult friends about how to return Momo to normal, she's attacked by a horde of...kung fu zombies?!