That Zuma Dude (ズマってやつ Zuma tte Yatsu?) is the hundred thirty-seventh chapter of the Dandadan manga series.
Summary[]
After finally meeting up with Unji Zuma, Momo asks for Okarun's kintama back from him. Unji figures that Momo has powers like him since she knows about the kintama but tells her that he can't give it back until he has finished the game. He also adds that the kintama is the only way he can use his powers, much to Momo's shock. Unji is then asked by Momo about the person who told him about the kintama and explains that it was someone he met at a library, whose face he tries to remember causes him to feel dizzy, who somehow knew what he was up to and that he has powers, leading to the person taking him to the police box to retrieve the kintama without seeming suspicious to help him beat the diorama. He also explains that the person is unable to enter the diorama and needed him to take his place, which Unji states to Momo that he was willing to do if it meant that he could help his friends. Momo also becomes shocked to learn that Unji took down every monster in the diorama but tells him that the diorama is a game and that the main goal is to clear every stage until they've reached the end point starting with climbing the wall. Momo is asked by Unji for her name but refuses to tell him until he gives her back the kintama. Seeing Momo having a hard time climbing over the wall, Unji helps her make it to the top by carrying her on his back. The two then see that what is up ahead is an obstacle course, which prompts Unji to give Momo his pants to avoid having to worry about her skirt going forward. However, after this accidently causes the kintama to fall out of the pocket, Unji tries walking across the obstacle course to get it back, leading to a few frogs wearing chef uniforms to appear. Unji then asks for Momo's help as the frogs go after the kintama.