The Seventh Day was the Day of the Sabbath―the biblical Day of Rest.
Assuming the eleven day theory was correct, then today, there should be no confessions made. Of course, it was only a guess. There had been no concrete evidence provided to say that we would be here for that long, so the reality could very well be different.
Still, I believed it to be true.
Not particularly because of the Protagonist's logic and reasoning or anything, but because Cecilia hadn't made an argument against her point.
I didn't think she would deliberately obscure such a fact, for one, considering the time limit was already plainly stated in the inscription.
Most of all, however, having been here for a week now, there was something I realised about the way this whole Decalogue Trial was constructed―or perhaps even the source material as a whole.
That is, simply, the fact that #Mystery wasn't really the main focus here.