[ Oh please, everyone knows he's keeping silent because he doesn't want to GIVE AWAY HIS DIABOLIC PLOTS and with the double whammy of silence and a mask he's making it literally impossible for the enemy to read him at all! What genius! ]

[ Katsura stares down at the line, scratching his chin. ]

Eh? Are we playing the hangman with literal hanging? Is that a single-letter word, then?.. Hmmm. It's a tough guess, but I'm going to say... "塵".

[ AND PALING WHEN HE'S HANDED THE ROPE ]

Wait, wait, was that wrong? Give me a minute, I know, I know --