The Black Butler Hunt starts 1-June-2011 to 30-June-2011. Bubblez Design hunt item is Sebastian Outfit.
You will need to hunt for "Bitter Rabbit" hidden in the store.
This is a by invitation hunt and you can be sure many quality items related to the Black Butler (黒執事, Kuroshitsuji) anime can be found in this hunt.
More information please refer to hunt blog at: http://little-crown.blogspot.com/