Kekkai Sensen (Blood Blockade Battlefront) - Supersonic monkeys, vampires, talking fishmen, and all sorts of different supernatural monsters living alongside humans—this has been part of daily life in Hellsalem's Lot, formerly known as New York City, for some time now. When a gateway between Earth and the Beyond opened three years ago, New Yorkers and creatures from the other dimension alike were trapped in an impenetrable bubble and were forced to live together. Libra is a secret organization composed of eccentrics and superhumans, tasked with keeping order in the city and making sure that chaos doesn't spread to the rest of the world. Pursuing photography as a hobby, Leonardo Watch is living a normal life with his parents and sister. But when he obtains the "All-seeing Eyes of the Gods" at the expense of his sister's eyesight, he goes to Hellsalem's Lot in order to help her by finding answers about the mysterious powers he received. He soon runs into Libra, and when Leo unexpectedly joins their ranks, he gets more than what he bargained for. Kekkai Sensen follows Leo's misadventures in the strangest place on Earth with his equally strange comrades—as the ordinary boy unwittingly sees his life take a turn for the extraordinary. 血界戦線 - かつて紐育<ニューヨーク>と呼ばれた街はたった一晩で消失した―― 一夜にして構築された霧烟る都市『ヘルサレムズ・ロット』 空想上の産物として描かれていた「異世界」を現実に繋げている街。 その全貌は、未だ人知の及ばぬ向こう側であり霧の深淵を見る事は叶わない。 人では起こしえない奇跡を実現するこの地は今後千年の世界の覇権を握る場所とも例えられ様々な思惑を持つ者達が跳梁跋扈する街となる。 そんな世界の均衡を保つ為に暗躍する組織があった。 その名は「秘密結社・ライブラ」 少年・レオは、ふとしたきっかけからライブラの一員となるのだが…
