Ryoji looks at him, before looking at her, gesturing almost as if asking 'what's his problem' but he's far too polite to actually... ask.

"That's... weird." And absolutely does not clue him in to exactly what happened. Nnnnnot at all. Has nothing to do with Angels. It's fine. (It's not fine at all, now he has to figure out if the Angel did it to stop people from entering or because it figured out he'd already gone in.) "It hasn't melted at all, has it?"