Truth be told Gin wasn't really supposed to be here right now, but after the events of a few days ago, he was feeling restless, and pretty reckless.
It wasn't hard to steal Aizen's PINpoint, either. The tricky part would be what was going to happen when his superior discovered it was missing.
In the meantime, though, Gin was very surprised at basically finding what amounted to a hotel lounge populated with all sorts of beings, doors of every shape, size, and description, .....and a sign?
Well...when in Rome?
"Huh. So, uhhh, is it still murder if ya kill someone who'se tryin' to invade yer territory?"