Katsuki looks up at that voice, a little confused to see a... robot? Huh. Okay. Not the weirdest thing he's seen. But on a beach? That seems like a poor choice. What with the sand and water.

"...I know a couple of people like that, yeah." Cat lovers, he means. "But they don't trade goods for pictures of cats. It's a weird currency system for a beach resort."

He got distracted though and the water laps his feet, making him jump and shoot the waves a glare like they just personally insulted him.

"You having any luck with it? Collecting?"