Wow, Roland was already on it? "Great!" Tidus lets out at that bit of info. Hey, he didn't make some bad guesses after all! But as Senku goes on, mentions another person--that gets him curious. Tidus thinks however more about the offer.

"Comforts on the train? Uh... what kind of comforts are you thinking?"

He knows this guy is into science...but not much else.