[Sebastian doesn't notice the discomfort, or maybe just doesn't care - instead he directs Yuuri's hand lower.]
Here, closer to the base of the ears, you see? Pet her very gently; she is a delicate lady. And then upwards, stroking to the tip of the ear.
[He shows what he means with his free hand and the cat's free ear. Luckily the delicate lady seems to be quite tolerant of being handled - honestly, any cat that puts up with Sebastian's affection has to be.]
It seems most cats do not care much for having their ears touched, so I discovered this quite by chance.
[Read = Sebastian did not know the first thing about how to pet cats (he has learned, to some degree) and he's fumbled a lot and probably tried petting cat ears a lot before realising it generally wasn't appreciated.]