Kekkai Sensen - Back 2 BackKekkai Sensen: Back 2 Back; Blood Blockade Battlefront - Back 2 Back; 血界戦線 Back 2 Back; Фронт Кровавой Блокады: Второе Возвращение; Фронт Кровавой Блокады: Спиной к Спине

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.