Quotes from GA: Geijutsuka Art Design Class (TV, 2009)

Miyabi: For example, Kisaragi is admiring exhibits in a certain exhibition. The worker seems to be taking down a drawing, but somehow he didn't show any signs of movement. Finding it strange, you go closer to have a look. But, that's not a person, but a drawing on the wall. On closer inspection, the visitors around you are also trompe-l'œil. Coming to your senses, you realize that you're the only person there. Scared, Kisaragi wants to leave the exhibition.
Miki: But, even the exit is a trompe-l'œil!