[He does not see the look, but he feels the concern and god, he wishes he could just turn that off. However, he does appreciate the restraint as he hurries over to the lamp. He gestures to it and explains quickly.]

These are travel lamps, we use them to get around the city fast, there's one in your bag, you can put it anywhere you want but you can't move it once you do. Just think about where you wanna go and it'll take you, so think "Shiro's house" or "Where Shiro lives" and bam, done. Okay, ready? Let's go.

[And with that, he… uses the lamp without waiting for questions, aaaand he's gone.]