It's hard work chasi-- er, tailing a woman who wants to keep some distance between herself and any who would pursue her. He's not out of breath when she finally stops, but the entire ordeal was still incredibly exhausting in its own right. And then for her to not only acknowledge him but to offer him dango and point out that yes, no matter what words he wanted to use, he had just been chasing a woman through the streets.

He can't not accept the offer though, that would be rude and he's really not in the habit of being rude to women.

Trying his best to not look frazzled, he somehow manages to not embarrass himself too much as his eyes fix pointedly on the treat. It's easier to focus on that than on the fact that he just got called out for more or less stalking her. "It's surveillance, not chasing. I'm not stalking you or anything."

Though, if he really wanted to be technical... but he doesn't, so it isn't.