In the era of Meiji, the forces of the underworld had gathered so much strength that it summoned intervention in the form of the warrior of age past. It did not come in easy as first encounter cost an arm. Barely escaped death, the hero of the unification was granted a tool to fulfill the prophecy. (Also crossover with Nioh 2)

She was not unfamiliar with time travel, but this time the artifact brought her to the world far past its prime. The future was dark, but the light she carries demanded her action. With guidance from a dying warrior, she seek to uncover the mysterious power that brought her here in the first place.