Complex sentence: Zuzu and her counterparts each possess a strange bracelet that reacts whenever Yuya or any of his counterparts are proximity of each other, quickly teleporting one of the youths to another location.
Split into simpler sentences: Zuzu and her counterparts each possess a strange bracelet that reacts whenever Yuya or any of his counterparts are proximity of each other. In her bracelet's case, it quickly teleporting one of the youths to another location.