Kekkai Sensen - Back 2 Back血界戦線 Back 2 Back ; Blood Blockade Battlefront - Back 2 Back ; Kekkai Sensen Back2Back ; Kekkai Sensen: Back 2 Back

Three years ago, a gateway between Earth and the Beyond opened over the city of New York. In one terrible night, New York was destroyed, rebuilt, and rechristened Jerusalem's Lot, a paranormal melting pot where magic and madness dwell alongside the mundane. The mysterious super-agents of Libra fight the impossible to prevent the unthinkable.