Responses
It still looks "incriminating" since while the girl didn't seem to mind if it was redhead walking in on her privacy, she did mind the dark-haired dude. That can only mean either and she knows itredhead's gay, or that he's not, and she's dating him...
Noona probably got something spill over her shirt or something like that. Ginu doesn't seem like the person to do something to a girl just to make a person jealous