Crazy Diamond's unique ability is to restore or revert objects or organisms to a previous state in their history through touch.
It can repair damage, heal injuries, revert chemical changes and complex structures to their raw components (e.g. a table into its constituent timber). It may also fuse objects, for example, a person with a rock (as with villain Anjuro Katagiri).[7] When restoring a divided object, the user is able to control which part acts as the starting points for the rest to gather towards.[1] Feats of this nature include trapping an enemy by restoring pieces of a broken crate around him; exposing a Stand formerly bound to an object;[8] and tracking by restoring a severed hand, forcing it to seek out and reattach itself to the body from which it was cut off.[9]
If this ability is used while Josuke is in a foul mood, its target may become warped as a result of improper restoration.[10] Crazy Diamond's ability cannot heal its user,[11] cure illnesses (as victims are not considered damaged),[1] retrieve things erased by The Hand,[12] or restore life to a dead organism.[13]
Josuke frequently uses this ability to heal his allies, pull himself or objects into an advantageous position, or trap enemies by repairing a whole object around them. He can also use outside-the-box stratagems that take advantage of the properties of an object's former state.