[kardinal]

You can download the caster and the viewer from here:
http://www.v2p.jp/video/
There is not much info on this software but it's supposed to be japanese p2p technology. Streams load very fast so I am not sure if it's real p2p.
So far I have noticed only one caster who broadcast different japanese tv's but nothing exclusive. I guess it's still new and not many people knows about it.
If some one want to try the broadcaster it's very easy because it has english menu.