A kunoichi (female ninja) nicknamed Sa-chan, supposedly from the Oniwabanshu. She is severely short-sighted and often loses her glasses to hilarious––or disastrous––effect. She met Gintoki when she fell through his roof. When she tried to convince him that he had inappropriate relations with her, he briefly played along despite knowing that she was lying to get his help. Ever since that incident, she has become infatuated with him, much to his exasperation. Her feelings for him seem to be encouraged, as she enjoys being put down and threatened by him, due to her extreme masochism. Her attacks are mostly based on natto and bondage. She cannot stand Zenzo Hattori, her former Oniwaban comrade, and has "attacked" him at his "weak point" (his hemorrhoids) by shoving in an enormous syringe, wooden barbecue stick and a candle.
Her name is based off of the ninja Sarutobi Sasuke.
Her birthday is June 2. She is 169 cm, and she weighs 52 kg.