The Forbidden Nen: HxH x black female reader/oc x jjk (kinda)(On Hold)

This Nen is far from different from the rest. Its Nen is so powerful that it could bend reality itself. That Nen is forbidden that nobody could remember it exists. Only one family has this Nen and was passed on to the next generation. But who knew the next holder of this Nen was a female child named Mich Sato.