btw
how did iino know to look for him? Unless I'm mistaken is this not the morning after? She passed out and shouldn't have known if ishigami was still there or not. And I don't think they had a prior arrangement to go home together. Either I'm overlooking something or looking too deep into this but doesn't this go to show how much she really trusts him by thinking he'd wait around for her/take her home?
edit: actually on second thought it probably isnt the morning after but shortly after the bedroom scene. Iino happened to gain consciousness and wakeup at the same time he was leaving (hence why he's still hard). My point about her looking for him still stands.