A DVD-only episode bundled with the special edition Take Moon volume.
Caren Ortensia attempts to control the world using money with varying degrees of success, Phantas-Moon receives a movie adaption of her T.V. show, and Shiki is involved in a love plot that spans years.
So in the midst of the Carnival Phantasm series we have this one additional OVA. It's an interesting compilation of various short parodies of Type Moon works. This particular OVA focuses quite heavily on Tsukihime though not exclusively. Despite having watched FSN/Fate Zero/Tsukihime, there were still unfamiliar characters (no I don't mean the cat-people) that are probably additional visual novel/game characters. It's a fun ride that introduces some interesting additional background on Shiki's history, or does it?
The animation quality is on par with the main Carnival Phantasm scene. I did find it interesting that they opted for scenes with God Rays but that aside you'll
find a typical mix of amusing situations mixed with some light action. Rin Tousaka makes an unexpected appearance as well.
This is identical to the main Carnival Phantasm series.
This OVA, as with the main series, isn't particularly uniform so just expect an assortment of events; some of these events are comical while others imply the director had a bit too much to drink. Overall it's a fairly entertaining mix.
Other than some surprising, though questionably authentic, history of Shiki, don't expect any real development here.
A fun addition if you've watched Carnival Phantasm and still want more.