I completely missed the first hour and 40 minutes, and the second part was exclusive to premium members, so I wrote this recap while watching the timeshift X_X Sorry for the late!

The guest music circles (including Buta) showed up at one hour and 20 minutes. Each one of them played a song and also gave anticipations about their C91 release.
Buta performed Kyou en! But no C91 news, they just promoted the major debut.
The second part was dedicated to comments about this year coming to end and celebrations for ZUN’s second child, and Paprika played various piano improvisations.