There isn't enough room for three people to fit through the next car - Library, where Roland frequents on the daily - so he steps aside and allows Tidus to take the further lead in a single file, his finger on the button to open the doorway.

He'll follow after Senku, but he's not sure if it's because he's moving about that he hears it. Some sort of static again, not quite what they picked up the first time, though it's something. Better than nothing, better than silence. He furrows his brow though he only offers a deep hum from his chest, letting the other two confirm if he's hearing things or not.

Then again, Roland's always found the gaps between cars a little eerie, for one reason or another.

As soon as he's free to speak again, whatever moment passing as they cross from the Library to the Music Car, he does so with a steady tone, evenly suggestive. "We need to start writing this all down as resources so anyone can learn from everyone else at their own time. Shelves are looking pretty empty anyway. We can assist in writing it down too, if the passengers aren't literate for any particular reason the universal translators can't pick up."