Hakuoki Reimeiroku Portable

A prequel to Hakuoki, set when the Shinsengumi were still known as the Mibu Roushigumi. A young wanderer named Ibuki Ryuunosuke falls in with the group by accident, shortly after their arrival in Kyoto. He befriends the members slowly and on his own terms, watching from the inside as the era of the Shinsengumi takes shape around him.