Haji-maru!
Voice actors of Rinne no Lagrange promote the BD and other shenanigans:
Ishihara, Kaori (Madoka)
Seto, Asami (Lan)
Matsuoka, Yoshitsugu (Array)
This mkv contains chat comments that are converted into subtitles. The first subtitle track contains both broadcaster and user comments; the second subtitle track only has the broadcaster comments. It gets a little messy, so if you want to disable the comments, disable the subtitles from your media player.
