Authentic Edo period original, 1824, Japanese erotic art shunga woodblock print picture by Utagawa Kunitora (active in the early 19th C. and one of Toyokuni's top pupils).  From his shunga series, Senrikyu.  Shunga picture measures 22 cm x 27.5 cm.  Very good colors and impressions!  Condition is good+ with some wear and soiling, few tiny pinholes, and a small stain at top right.  Please see and judge from photos. 
 
A great antique original shunga erotic art picture depicting two warring samurai factions going at each other during the night.  It's quite the chaotic scene as some of the invading samurai seem to be celebrating and taking their liberties with the local women too soon, as the defending samurai continue to attack and defend their turf.