In this scene, the monster is trying to break free of his shell, but it's too late. He realizes that he's been trapped in purgatory for so long that he can't escape it. The monster tells the brat that he stole their "cultivation method" and hid in purgatory. The brat is shocked and says that he will never be able to escape purgatory, even if the beast wants to kill him. The beast says he'll drag the brat to hell with him.