Mushanokouji was scolding Akutagawa in the library, talking to him about how he's not allowed to smoke here, you entered the place and just sat at the table because there's not much to do in this place, after all you're just all embodiments of dead authors summoned by alchemists to purify books and pretty much can't leave or die Akutagawa was a bit surprised by the interdiction

"Eh, I can't smoke here?"