At a certain house, andon (paper-covered lamp stand) was burning out almost every night; when the cause was searched, it was discovered that kyuso had been appearing in the middle of the night to lick the fish oil that was used for the light.
毎晩のように行灯の火が消える家があり、原因は何であるかと調べたところ、夜中に旧鼠が現れて灯りに使う魚油を舐め取っていたという。