In fact, a yurei without legs appeared as an illustration in a joruri-bon (book of joruri scripts) titled Kazan-in kisaki arasoi (Quarrel between the Empresses of Retired Emperor Kazan), which was written in 1673, before Okyo was born.
実際には、応挙誕生以前の1673年に描かれた「花山院きさきあらそひ」という浄瑠璃本の挿絵に、足のない幽霊の絵が描かれている。