Unfortunately spanking is not a thing in Japan. You might find it shocking, there's all kind of molestation, r***, S&M and torture vids in JAV but some very common and standard theme from US/Euro porn/erotica is just not really known in JAV. Without spanking, forget the fine specialization of fem-fem spanking (I wouldn't call it lesbian spanking myself). Also whipping is not a thing.
Just broadly speaking JAV and West both have S&M culture but when you look closely the two are so different there are very few overlap.
BTW, thanks for a very nice pix. So deliciously pink.