This scene seems the back of the stage.
Maybe they are Oiran(花魁)?
They are checking their pubic hair each other..
Getting ready for the Big Stage!!
—
Title Unknown
Kuniyoshi Utagawa
Around 1840
題名不明
歌川国芳
1840年頃
The back of the stage
SHUNGA is Japanese erotic art about 300 years ago. It gives us a glimpse into the life of civil at that period. I will show you the world of SHUNGA!!