"How rude! Invading a man's house and asking him, 'Who's there?!'"
Shizuru: You must be tired... Not even noticing that I selfishly let myself in...
Shizuru: Is it not dangerous to leave the door unlocked? What would happen if someone else entered like me?
Natsuki: I'll be more careful from now on... Though I don't think anyone more dangerous than you even exists...
— Natsuki and Shizuru, Mai-HiME Shiz/Nat Dojin