[Yuya, by this point, has gone on to reading a book in his lap and occasionally checking his phone. He looks up immediately when the door opens, and when Toki answers... he blinks slowly, not quite comprehending.]
You don't know?
[It's something that's always so clear to Yuya. He doesn't understand the uncertainty.]
no subject
You don't know?
[It's something that's always so clear to Yuya. He doesn't understand the uncertainty.]