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The chances of Neo & Bee being involved if they believed ukyo to be pulling a fast one are somewhere between zero and none.
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Well, no. The chances, at this point, are 100%. Ukyo broke the law by running an illegal exchange, by offering unregistered securities to US persons, etc., etc. There is no question that Neo & Bee are willing to be involved with a criminal -- they are. The only question is, what kind of a criminal Ukyo is. Whether he simply ran afoul of securities law, or if he actually stole coin.