This was on the infamous Quiz! Hexagon II show (which has now ended a few years ago due to alleged yakuza connections of the host of the show).
Maipuru, Sayanee & Koizumi have been on this show as well. (Koizumi getting 0 points on the pre-show test, practically nobody has ever had 0 pts on that show ;p)
The new producer of Idoling!!! was one of the producers of Hexagon btw.