@omegax @acolytus Sureau gave Laius the bell to ring if he was in trouble, it's connected to another bell that Sureau has.
(In another chapter it was mentioned Laius dumped his bell in the bottom of his bag where it was rolling around and ringing the entire time, which is why he's not alarmed by it, just startled and annoyed lol)
Edit: Whoops nanze beat me to answering, sorry!
It also just occurred to me the bell might play into a boy-who-called-wolf-esque plot point in future when the party is
actually trying to call for help ?