Of course, as you know, d4c is a stand from JoJo Part 7, it's a fanny Valentine stand And his ability :
(Dimension Hop)
Dirty Deeds Done Dirt Cheap allows different parallel worlds/dimensions to co-exist at the same time and/or in the same place. It also allows its user to visit these parallel worlds/dimensions and interact with them.
Valentine travels by being closed between two objects, shown first by putting himself between a chair and the ground. Liquid materials, such as water count as objects as well, and even dust or steam. Valentine only needs an infinitesimal part of himself put between two objects to be able to hop between dimensions. Following that, Valentine may reappear from anywhere, like emerging from someone's back, presumably by affecting objects in a neighboring dimension. One of the early facets of this power was that Valentine was impervious to projectiles as the hit body part would transform simply into a hole, however, this was then left out after its initial usage.
Valentine can also pull other people or items to other dimensions by forcing them between two objects or into the object he uses as a portal for instance he can slam a door on them while they are backed against a wall. However, as no two versions of the same person or thing can co-exist in the same dimension, one of them will have to go back into their own. If not, and if they get too close to one another, both will crumble, splitting into
(Menger sponges)
before obliteration, potentially causing an explosive reaction that may harm those close by. This rule does not apply to Valentine himself. Valentine can also only partially drag people into a new dimension, immobilizing them inside an object.
Diego Brando has demonstrated that people other than the Stand User can pull people to other dimensions if he reuses the same objects that were used to drag them between dimensions.
It is explained that between dimensions, gravity as a force is able to persist with Valentine when he hops between dimensions. This keeps him from breaking into pieces and becoming scattered across the different worlds.
If Funny Valentine is injured, he can hop into another dimension and transfer his D4C to this world's Valentine. Said Valentine acquires the memory of the previous Valentine and becomes the 'Root Valentine' by virtue of now possessing the Stand, but his consciousness remains different from that of the previous owner. Nevertheless, since each Valentine is dedicated to gathering the Corpse Parts and has the same personality, the differences are unnoticeable. Furthermore, he can summon any number of alternate selves to a target dimension in order to outnumber his opponents. These Valentines do not have D4C's of their own however, this Stand seemingly being wholly unique to the 'Root World', the single universe where the Corpse resides.
In short, if fanny Valentine was between two things, he could go to alternate universes and bring a copy to his enemy, if they got close to each other, die, that's his ability
Disclaimer of liability
Jojo and bleach are not mineEnglish is not my first language