[While Natsumi herself isn't a university student, she had spent the night with a friend who is one. So, when she heard a loud, rude voice waking them all up at an ungodly hour of the morning, it's only natural that she's the one who stumbles to the door first, yanking it open to glare half-sleepily, half-irritably at the old man.]

Do you even know what time it is?!