Upon hearing the question from the Rat Immortal, Korma's first reaction was to subconsciously lift her head and glance above. The treetop's branches and twigs intertwined with the fresh leaves of early spring, but there was no cat riding upon them.
Therefore, she interpreted the term 'riding' as 'seven,' which also fit the pattern of a brain teaser.
With her fingers crossed behind her back, the witch quietly counted, then tentatively responded, "Seven cats in the tree, no cats on the ground, so could there be a total of seven cats or maybe one cat? As for whose cats they might be... in the Silent Forest, the cats are perhaps born and bred of the forest itself."
This answer was by the book, yet showed a bit of cleverness.
"Do you think the cat has the surname Sun? Born and bred indeed..." The Rat Immortal sneered at the witch's answer, shook his head, and denied, "Let me tell you directly, then. There are zero cats in total, and that cat belongs to Schrödinger."