Kris doesn't seem to have the same reservations about staring in Frisk's direction. They've had a good amount of practice with that. They didn't earn the "creepy kid" title for nothing.

And--

Well. They could freak out about Asriel's popularity seeming to stretch even THIS far, but...

At least they know they've never heard of 'Flowey' before. "Az..." They look at Frisk a little more closely. "...How d'you know my brother?"