[One of those surfaces just happens to be the window of the convenience store, on the other side of which Ritsuka just happens to be loitering.
Oh. You're that nosy guy from when Ritsuka first arrived.
Ritsuka's feeling generous enough not to glare, but he does watch Alto fussing over his appearance with clear skepticism. After a few moments, he reaches forward and knocks on the window, holding up a little hand mirror so Alto can see.
Maybe Alto would have better luck with one of those instead.]