This is just a bit of comedy made for the dvd release. The players sit around at a table and talk about past games, and then try to think of what else they can do or talk about for the fan disc. It's really low budget and is mostly just long pans or other techniques to minimize movement. It's amusing to listen to them make fun of themselves in a way, but if you can't track it down you aren't missing anything here.
It's about 10 minutes or less. It is only chat between junior and upperclassmen of Seirin. they talked about the plays they had before Kiyoshi came back.
It is very simple, but I like it very much because it is full of comedy.