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I don't know about others, but I'm voting based on the clues! Because, in my opinion, only an expert could have put them there... and why did he put them in the castle? Because Cash turned out to be a bad guy, so he decided to break his castle so that he couldn't leave the house (it's even written in the newspaper), hence the blocking of ND... it turns out that Cash is a maniac, because Crabby was most likely a member of the Mafia) although there is still a small chance that Crab was a snowman, and the sword is just a description of the murder (maybe Veg didn't think carefully about the logic of such a murder, I don't know))), then Cash might also be a member of the Mafia...