Koshibagaki Zoshi are drawings of a secret affair based on a story of "Jikkinsho" (Miscellany of Ten Maxims), which says that during the reign of Emperor Kazan in Kanna era, a rumor went around about adultery between Princess Nariko, the vestal virgin princess, and Taira no Munemitsu, a warrior of "Takiguchi" (a special guard unit attached to the Chamberlain's Office), which led to the cancellation of Princess Nariko's service at the Ise Shrine.
花山天皇朝寛和斎宮済子女王と野々宮における公役滝口平致光との密通の噂が流れ、ついには済子の伊勢行きが取りやめになったという、『十訓抄』にある物語に基づく秘戯図である。