Hakuoki Shinkai: Ten'un no Shou

Sinopsis en inglés

A sequel to Ginsei no Shou and Tsukikage no Shou. This time, the story takes place in Kyoto, where the Shinsengumi were active in the past, and spins the story of their youth and memories that were not depicted in the main story, including incidents of various sizes that are recounted along with the events of the four seasons.