Deal Game, Test of Wit Senku begins reviving the rest of the crew just as Amaryllis arrives with news of Kohaku and Ginro's petrification and that Soyuz is likely the Master's son. Senku and the others deduce there is only one Medusa weapon, but due to the range of its attack, it risks petrifying the one who activates it, which is why Ibara daren't use it himself and forces Kirisame to do it. This also means Kirisame isn't aware the Master is petrified or how evil Ibara is. Moz appears in the cave at that moment, but in a moment of extremely rapid deduction, everyone realizes Moz knew Kohaku and Ginro were intruders yet never told Ibara, meaning Moz is secretly Ibara's enemy...