Reigen was behaving so naturally that Mob could only ponder whether or not he imagined everything from earlier. But... he was sure he hadn't.

And that reminded him of his conversation with Teru earlier.

"Earlier, you were acting a little strangely," Mob started, pressing a hand against the towel on his head to keep it steady; it'd become slightly dislodged after Reigen's tousling. "You haven't been cursed or possessed by a spirit, have you?"