"A bold young male is showing his shy lover the intimate paintings of a well-known scroll.”
The scroll here is a later copy of the famous 'The Brushwood Fence Scroll (Koshibagaki-zoshi)', that was originally produced in the 12th century.
Reference: p.134 (Ill.132) in 'Shunga, the Erotic Art of Japan' by M. Fagioli.
Original antique Japanese color woodblock. Shunga (Erotic picture).