Shuwarin TV 9
This was the 9th broadcast of Shuwarin TV, by Pastel Palettes. The seiyuu were Maeshima Ami, Ozawa Ari, and Hata Sawako.
The challenge for this broadcast was to match sound effects. Everyone had to write the sound effects for a given topic, and they had to match.
They got the first one right, but missed most of the rest. But they got a couple more, and finally got the prize, which was a bag of expensive potato chips.