Kurozuka

In 12th-century Japan, swordsman Kurou escapes ghastly pursuers into a deep forest with his servant Benkei. Seeking shelter, the two find themselves within the secluded abode of the mysterious and beautiful Kuromitsu. While they are warmly accepted, the men are warned to never enter Kuromitsu's room.

However, driven by innate curiosity and perhaps a condemned love, Kurou peeks through the ajar door, only to find Kuromitsu feasting on the blood of fallen men. He soon learns Kuromitsu is an immortal vampire, and dedicates himself to her—even becoming a vampire himself in order to spend eternity with her. But the cryptic organization known as the Red Army has enlisted the help of Benkei, who betrays Kurou and severs his head.

Awaking centuries into the future in an apocalyptic modern-day Japan, Kurou sets off to reunite with his lover and exact revenge on the Red Army.

(Source: MAL Rewrite)

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