FF On-all-fours position spanking with the Big Hand

They enjoy the Pachinko and a spanking as s "penalty game"  in a certain Pachinko magazine.

https://www.youtube.com/watch?v=oZZeMttBGZ4

The winner of this game is Yuirin and she can get the right to spank the loser,Hiyoko-mame.

Probably, Yuirin's twitter is here and Hiyoko-mame's blog is here...