Two short OVA of Hakuouki distributed to those who purchased all six volumes of the DVD. A fandisc game "Hakuoki Zuisouroku" and an official parody "Hakuoki SSL (a high school parody)" were animated.
Because we are making use of some free resources to reduce the main server load, the player
can be opened on another domain or showed as a new tab (you have to allow pop-up if you're
not using Chrome).