Rise of the Nakamura
A powerful clan that controls the most Northeastern provinces of Japan. They mobilized and captured Shimotsuke Province near the beginning of events, but have made no moves since. There are rumors that some dark force or curse has a hold on the clan, and that its power is slowly deteriorating.
Uraboshi was sent into Date territories to end his life in a burst of plague, and the Nakamura Demon Squad was also dispatched to cause paranormal phenomenon and general chaos to the North. These two combined are the likely origin of the rumors of a deadly curse affecting the Date Clan.