Dandadan. Volume 14: Yukinobu Tatsu

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!
As Momo and the others fight desperately against the alien invaders, a recovering Okarun finally comes to and is able to join them. Unfortunately for him, it’s Tuesday, and that means one thing—the Evil Eye wants to fight! Thankfully, the invaders quickly capture the Evil Eye’s attention when they get in the way of his match, and with his help, the team begins to crush the enemy. But suddenly, Vamola’s suit is snatched by an octopus-shaped invader, landing the team in dire straits!