“BLOOD-C” is a 12 episode long TV Anime originally broadcasted in 2011. Much like “SHIROBAKO” and “Girls und Panzer”, “BLOOD-C” is an original work, created in collaboration between the director Mizushima Tsutomo, the female manga writers’ group CLAMP and Production I.G. On June 2012, the movie came “BLOOD-C The Last Dark” came out. The marathon on Nico Nico Dôga will be running on June 28th, from 6 PM!
Source: http://ioryhamon.com/archives/8010038.html