Lit. "Underworld Uesugi Army"; the army formed by Uesugi Kenshin to hunt down the onryou so that the peace of modern-day Japan is not threatened by centuries-old conflicts. It is composed of all the spirits who have some connection to the Uesugi and who were called upon by Kenshin. The Yasha-shuu could be called its commanders, though Uesugi Kagetora is the only person with the authority to lead it.
Meikai Uesugi Gun (冥界上杉軍)