There's a strange man slamming his fists against a poor vending machine. His clothing's a bit antiquated, but there are all sorts of different folks that call this world their new home. And thus, Minato spares him no more than a quick glance. It's not too bizarre a sight. Perhaps he's simply frustrated about his drink getting caught in the machine.
But Koromaru digs in his heels, glancing up at his human companion. He barks once to demand Minato's attention. The boy glances down in response, canting his head to the side with a puzzled expression.
"You want to see what's going on...?"
Koromaru wags his tail and barks again as though to confirm Minato's inference.
Both boy and dog draw near the frustrated man, though they keep a safe distance from him. Displeased persons aren't always reasonable, and Minato's the sort who wants to keep troublesome things at bay. Now that they're closer though, he sees not only is the man dressed as if he'd stepped out of a period drama, but he also possesses unusually long arms. If he tried hard enough, he could probably fish out whatever he's trying to order from the machine by sticking his arm through its drink slot.
Minato and Koromaru simply stare in silence, their presences blending in effortlessly with the environment.