Steel Ball Run - Chapter 69
Valentine, unharmed by Wekapipo's Steel Ball, reveals his Stand, Dirty Deeds Done Dirt Cheap (also known as "D4C"). When Diego slams Valentine against a wall, he disappears and reemerges from Diego 's back. However Wekapipo uses his left-side ataxia on Valentine, enabling Diego to attack. Valentine then grabs a flag and envelops himself with it. When Diego lifts up the flag, Valentine emerges from it and drags him through it. Diego finds himself stuck half-way into the flag and sees alternate versions of himself, Wekapipo and Valentine. Valentine takes the Left Eye from Diego and explains D4C's ability to travel between neighboring worlds. Both Diegos' bodies begin to crumble into Menger's sponges which fuses between themselves.
A flashback explains how Valentine, using his ability to make parallel universes cohabit, shot Johnny and then reenacted the shootout into neighboring universes, each shootout being seen by different witnesses.