Sequel to Hakuoki Yuugiroku.
One summer while the Shinsengumi was moved to the nearby Shrine, there have been rumours about an attack that will be taking place at the festival to come. As part of the Shinsengumi's duty, they will need to be on guard during the festival. For Chizuru, who isn't allow to get out alone, she would have to go to the festival with someone.
