This Quirk allows All For One to forcefully activate someone's Quirk against their will.
Whether the target is conscious or not, the Quirk will work without fail, thus giving All For One a method to use his allies' Quirks without having to worry about their state. Also it does not harm the person the quirk is being used on.
The Quirk manifests itself in several nerve cell-like tendrils that the user must connect to their target. All For One also uses these for offensive purposes.