Touken Ranbu: The Stage - Gi-den: Akatsuki no Dokuganryū.

2205 AD. "Historic revisionists" aiming to alter history have launched an attack on the past. When confronting, the government dispatches a "god of the deity" into the past to protect history. Created by the power of the priest, which excites the heart of things, With their swords, the mourning gods, the "sword swordsmen," work with the priests to fight for history.