This OVA takes place in between episodes 8 and 9 of the first season of Hakuouki. Yukimura Chizuru goes on a reconnaissance mission in Shimabara as a geiko for the Shinsengumi. Each episode unfolds the events of the days leading up to, during, and after the operation. It intermittently reveals each captain's involvement as well as that of a few demons in the affair. Each individual episode primarily focuses from the third person perspectives of: Okita Souji, Saito Hajime, Harada Sanosuke, Toudou Heisuke, Hijikata Toshizo, and Kazama Chikage.

Mido Ban and Amano Ginji are known as the Get Backers, retrievers with a success rate of 100%. Whatever is lost or stolen, they can definitely get it back. Despite their powerful abilities and enthusiastic behavior, Ban and Ginji are terminally broke no matter what they do simply because few people would actually desire to hire them. As a result, the pair of them tend to do dangerous jobs, often leading to unwanted re-encounters with their old (and dangerous) friends.

Subaru Ichinose loves his cockpit as, to him, it's like being in his mother's womb. Whenever he struggles to converse with his fellow pilots, his cockpit is the one place he can be alone. As the ace pilot aboard the Tiramisu, Earth Union's most important battleship, it is his job to defend Mother Earth from the threats that emerge from humanity's extended dominion spreading throughout the vast reaches of the universe. Armed with his personal mecha Durandal, Subaru must fend off encroaching foreign colonies as he struggles to protect his personal sanctuary from rogue fried pork skewers, suffocating backwards shirts, and unsolicited redecorations. In the year Space Age 0156, the fate of humanity rests entirely in his hands. [Written by MAL Rewrite]

The story is about a girl named Ronja who is the daughter of a chief of a tribe of bandits and lives in a huge castle in the forest with the bandits. The story follows Ronja as she encounters mystical creatures, makes friends with another young child like herself, and experiences life in the forest.