Our Secret:Kageyama XM! Reader

Y/N Hinata was living his life to the fullest, unfortunately that was a lie. He and the rest of the people that live near Karumi were separated from the outside world at the end of a road that leads to the middle of no where stands a border wall, spearing for who ever or what ever was standing out there. No one was aloud outside and no one was aloud in, but what if one day they found a way to get over and meet the mysterious creatures that lay over their.