Smart little detail: You'd think Yanou (Shizuka) would be able to hear her coworkers discussing her across the room... but she's got earphones on. Why does she have earphones on? Well, because she's blind, she needs to hear her screen reader to work, duh! If you go back, you can actually see her wearing earphones in the office in previous chapters, too (though she still conveniently responds when called every time).