Even if 'gaijin' wasn't technically true, it was what he was widely thought of as; and, well... being polite and considerate to him was nice! Kura hadn't had that principle applied towards him too often, so...

"Right! I'm not just going to sell it or something, senpai. Don't worry!" He smiled again, just happy the other said he trusted him more than anything. "It's not mine to give out!"