Haruka Tōyama, a young girl, is kidnapped by agents of a company named EX-SOLID due to her precognition abilities. She quickly finds sanctuary with a man named Hijikata Mamoru, a blind swordsman, ex-kendoka and convict who is proficient in the use of a katana, and desperately runs him down in the street. Upon meeting, Haruka told Hijikita to protect her "Until Death Do Us Part." Confirming the terms of the contract, Mamoru quickly dispatches the pursuers on her tail and took her in for protection.