"Well, pretty much everyone is still 'really old' compared to you. How old are you, anyway?"

And then...whoops. There he goes, accidentally tipping his hand. Kotetsu ducks his head a little, embarrassed now. "Oh, y'know. Japanese, Spanish, English...andafewotherones." It's much easier to admit to being a polyglot when he's apologizing for forgetting words. Still, he probably doesn't have to worry. Frisk doesn't seem to be easily impressed by much.

"And yeah, I'm starting to notice that. The people here seem usually nice. Which is why I don't want the big green jerk to go around ruining it for everyone, y'know?"