13 is the most probable value right now even as an outsider, so since Usogui knows the number of his beads it'd make sense for him to be even more certain than just because of probabilities. Anyway, as an outsider, I would say that I think Suteguma's number is either 4 or 5.
Surprisingly that doll was a signal from Marco and not from Ranko! That's really interesting. Also, the fact that not only did Marco make it down here after arguably facing 3 enemies, and without any additional injuries (!) makes the sleeping gas hypothesis even more likely for me, at the very least we know that a 1v3 fight did not happen, even in rage mode Marco can't beat all of them and come out unscathed.
So yeah, still not certain whether or not the 13 is a bluff or not, or the depth of Usogui's planning, so I'm looking forward to that reveal a lot!
Great job as always to Team Duwang; you guys are spoiling us with these insane daily releases! At this point I'll be super sad when the daily releases stop, so maybe you can tell us on the comment section of the last daily release that the next won't be daily? (Assuming the daily releases will eventually stop...) Otherwise I'll go crazy refreshing the page every 15 minutes after 24 hours have passed since the last chapter. Love you guys!