"Awake?" His voice echoes through the room somewhat, and Gin 'smiles'. "I would say you won't recognize me, but that's clearly not the case," he started, arms crossed behind his back. "You knew enough of me to stalk behind me to this place, exercising considerable caution even- so that begs the question of how you knew...

"And exactly what you were doing at Tokyo Tower in the middle of the night..." There's no need to specify when either- after all, the date is obvious already.