What the hell... the manga skipped a big character development for 3 people there. Olivia was supposed to be in danger of going outside of the deck and became a hostage, and then both Greg and Brad tried to rescue her, making Leon realized that that is what should happen; a female protagonist being helped by her love interests to follow the game plot. That also makes Leon realizes that he was the one hindering Olivia's growth all this time. Again, what the hell, man...