Yarin's POV:
Initially, I would only maintain this state for a minute before immediately returning to vomiting. After training, I could barely hold on for half an hour. I must find Lily in half an hour, or we were both screwed.
Most people went to the streets to party during the Moonlight Festival. Few people stayed at home, which made it convenient for me.
I could see the whole of each room through the windows, but not all rooms have windows, and not all are transparent. Ten minutes passed, and I didn't find Lily anywhere I could see. I thought she was locked in a room with no windows or curtains.
So I finally started to use the simplest method - shouting Lily's name. People who didn't know her would think it was just a small noise outside the window, and Lily would realize I was there to save her.