for some reason, I think Nao would do really well living in a nudist colony. she could bare her true self without shame.
I don't think so, well if I were in her shoes, the thrill of being seem or almost being seem, would disappear if everyone else is doing the same and doesn't care about it, she needs that adrenaline and passion that comes from the danger...... Not that I would know for sure, just hypothetically speaking of course :))))))
I think the reference to Ikkyu wasn't an anime reference, but a direct reference to the Zen Buddhist "riddles" they use to attain truth.
She takes that "Please bring here that Sawano.." as a clever way to show her the truth behind the lies (whereas she was just spouting nonsense to save herself).